The Buff Bag holds all your buffs and uses them with one key. It has a pocket for a meal, a drink, a potion, a scroll, a gadget and a field kit, up to 99 of each, and takes one bag slot instead of six.
The Store sells it for 35,000 tickets. It's the Featured Item on the front page, and it's under Upgrades.
One per character. It can't be traded, sold on the Exchange or dropped, and it's safe when you die, like everything else.
Click it in your bag, or press B anywhere (no need to open the bag), to use one of everything loaded.
Using it
Pressing B is the same as clicking each item yourself. The scroll reads at your Wizardry's tier, the kit at your Fletching's, and the meal heals you as well as buffing you.
Anything still running is skipped, never replaced, so nothing is wasted. A buff with under a minute left counts as run out and gets topped up. One line in chat says what was used and what was still running.
Right-click it to open the Buff Bag window. Each pocket shows what's in it, how many (of 99), how long it lasts, what it does, and whether it's running.
Load a pocket from your bag: pick the item and as many as fit go in. Picking the one already there tops it up. Picking a different one swaps it, and the old stack goes back in your bag (if there's no room, the swap waits until there is).
Take out empties a pocket back into your bag. A pocket you've used up shows "empty, refill?" so you know what to restock.
The bag has to be in your bag to use, not in the bank. What's in its pockets stays with you either way.
Snares, grapple arrows and fishing arrows: they're used where you stand, not as buffs.
Teleports and waystones, and anything reforged.
How it works
A potion is its own buff now. A bar drink and an alchemy potion used to share one buff, so drinking one replaced the other. With the Buff Bag, a Champagne and a Starcap elixir run side by side. Every effect still stops at its cap (the Character window shows them).
Tips
Fill it before a long session: 99 of a 30-minute drink is over 49 hours of it.
Your buffs are on the buff bar with their minutes, and in the Buffs tab of your Character window (C).
There's only one gadget pocket. Tinkering lets you run several gadgets at once, so you can still click a second one yourself.