Meow Ren.5382

If you mean for the Assembly Device, unfortunately no. You just have to wait.

I think OP may have confused two different achievements. Ornate Rusted Keys are used on Sunken Chests and advance the repeatable Master Diver achievement. You start the process by talking to Dive Master Astora in Lion's Arch: https://wiki.guildwars2.com/wiki/Ornate_Rusted_Key Dive Master is a different achievement involving use of Diving Goggles found throughout Tyria. I'm not sure how many people have the same issue as OP in regards to having so many of the keys however. The swim speed infusions are nice, but not something I'd want to keep doing just to get.

Talk to Kelvie, the asuran who's wearing the Ad Infinitum wings in the Fractal hub. She'll give you a consumable called Theory of the Finite Result. Consuming it unlocks the first collection. https://wiki.guildwars2.com/wiki/Kelvei,_the_Legendary_Observer

The ones in the cobweb version of EotN where you're the only person, no. But in the open-world version of EotN with other players around you can unlock the Xunlai chests after a certain point by talking to an NPC: https://wiki.guildwars2.com/wiki/Xunlai_Chest

If you're looking at just cost-per-salvage and have both kits, the Runecrafter's is cheaper per salvage. But it has a 5% LESS chance for rarer materials (the Crystalline Dust you want for selling). https://wiki.guildwars2.com/wiki/Salvage_kit

Gen 1 precursors (like Dusk) can only be crafted once because that crafting is tied to an Achievement that can't be repeated. Some of the crafting components of the Achievements can be re-crafted but you won't be able to craft a second Dusk. In that, your guildies are correct. However, Gen 1 precursors also drop randomly from foes and from throwing rares or exotics into the Mystic Forge. There are other sources which is also why other players talk about selling them on the TP. Unless you want to try your luck at flushing rares /exotics down the Toilet, your best bet if you've already crafted Dusk once is to save gold and buy it off the TP. After you have the precursor, the rest of the steps to make Twilight are the same as always. TLDR: you can only CRAFT a Gen 1 Precursor once, but can buy it off the TP as well. You can make as many Twilights as you want as long as you have a Precursor for each and the materials.

If you still need help with this, I have a character parked at the NSS goggles. You should be able to (carefully) hop down from there to the lower platforms and find the spot you need. In Central US timezone if that helps line things up better. :)

The Extra-Pungent Skyscale Treat is used on the fourth part of the Skyscale collections quests. It can be used while in the map for any of the "Troublesome Skyscales" achievement parts. You don't have to be IN the JP or even get to the end if you use a treat. It's meant as an alternative for folks who have difficulty with JPs and whatnot. If you have a treat and double-click consuming it doesn't work, check your achievements and make certain you don't already somehow have that part done. https://wiki.guildwars2.com/wiki/Troublesome_Skyscales Also make certain you've actually unlocked the "Troublesome Skyscales" achievement. You're meant to do them in order and it's possible to buy the treat off the TP without having the achievement unlocked. Full SKyscale acquisition process is also on the Wiki: https://wiki.guildwars2.com/wiki/Skyscale#Unlocking

Try right-clicking the items and look for the option to "Add to Novelties" or "Add to Wardrobe". They need to be unlocked/ added to the Wardrobe in order to be able to then add them to the Novelties slot on each of your characters. You'll know it worked because they should disappear from your inventory.

If you've completed all the other HP in Heart of Thorns or only have the difficult ones left (like Mushroom Queen) and have some WvW tokens you can buy a Notarized Scroll of Maguuma Heroics. The Scroll will give you a random HoT HP when consumed. https://wiki.guildwars2.com/wiki/Notarized_Scroll_of_Maguuma_Heroics

You can also track most of the core Tyria jumping puzzles through an Acheivement in your hero panel. It doesn't tell you exactly where on a map a JP is, but it gives a hint as to the map: https://wiki.guildwars2.com/wiki/Jumping_Puzzles

SAB and zephyr is once a year npc wise, and hardgrinders are wintersday and halloween. Have u ever decorated a guild yourself with a small roleplay guild? Playing house is pretty hard, when u have to hardgrind these special 2 weeks a year while the rest of the year the candycorn and flakes are only accessable from a ridiculous tiny amount from your home ini or freakin expensive buying stacks from TP. The Furniture Coin for guild hall decorations can be bought year round from the permanent NPC in Rata Sum if you have baubles saved up or have some from the home instance node. I wouldn't personally call Candy Corn prices on the TP "freakin' expensive", but the price may drop a bit now that the big demand for the festival is done. It's just a matter of being patient. They did add a Zhaitaffy node for Home Instances this year, so there's always the chance they may add something for the Zephyrite tokens....someday.

One set in Shared slots works best for me personally. I have another full set of infinite tools on my "casual activities" main. I'll hop on her to run through maps for harvesting and some quick dailies while I have something playing on TV. It saves the little bit of worry about forgetting to re-equip them into the Shared slots. For that last spare pickaxe, as HnRkLnXqZ.1870 suggested if you can spare a character to sit at a permanent rich node, you can hop on once a day for a bit of bonus mats. Rich Quartz Node in Crystal Oasis is one of the better ones imo due to the Devs constantly giving us things to craft with Charged Quartz. And because there's no running around required -- log in, spend a minute mining, deposit and log back out. That node is also nice because if you ever move the character, it's not too hard to get them back to it later.

If you're determined to not use the TP to just sell it, your best bet would be to set up an in-game raffle in one of your guilds. However, any kind of raffle event runs the risk of devolving into accusations of scamming. Unless you're well-known in your guild and trusted by everyone participating, participants have no way of knowing for certain that you actually HAVE that precursor (pinging can be faked with item codes from the wiki after all), that the raffle will be an honest one and that the winner will actually receive that item. The only time I've seen raffle-type giveaways for high-value items like precursors, it's been done by streamers on Twitch. And in those cases, they're not doing if for money for themselves, they're giving the items away free to their communities. Otherwise, as DeanBB mentioned, you're better off just selling it to the highest bidder on the TP or going through one of those player-to-player trading guilds (also subject to risk if you don't have a trusted middleman).

Do you mean that you had unpacked / opened the single birthday gift box (the one that looks like a present) and had all the individual contents (special racial backpack box, weapon box, etc). Then you went to open those individual boxes and they disappeared from your inventory rather than giving you a backpack choice, etc? If so, did you have your account bank open at the time? If you double-click-open from the BANK window that shows your inventory contents, it actually throws that item into your bank instead of opening it. Maybe check your bank to make sure they're not sitting there?