My first 3 bags are just normal 20 slot ones (haven't gotten around to getting larger ones yet), then an Oiled Bag (junk items go in here first), then an Invisible bag. I will likely start making 20-slot Olmakhan bags and getting an extra bag slot for my most-used alts in the future. (MMO alt equiping - the only place 'trickle-down' works!)Priority have been Craftsman's, and Safe Box.

I occasionally craft a bigger bag for an alt, and the replaced bag(s) trickle-down to the other alts. My two mains have 20-slots, with only my Main-main have a bag slot added.

Olmakhan bag (so far 24 slot and only my main).

Size of bag is based on how much each character carries with them. Several characters have three slots here dedicated to Unidentified Gear. I always keep it full (so random loot doesn't end up there) and keep a few thing in it that can't be salvaged or sold, to swap in temp things.

Invisible bag, for alternate gear, consumables and things I don't want to sell/salvage.

Shared slots, containing Gathering tools, Copper-fed, VIP pass, Position Rewinder, Watchwork Portal Devices, TtF, Revive Orb, Merchant & Bank express, SW shovels and Magic Carpet.

Or invest in something where i can make gold from later.

Lets say if i get an ascended boot box, that will go to that character. That one is used for keeping ascended drops and investment.

Oh and i also have an specific character which i use as an alt bank too. Next to that i have my daily boxes, salvage stuff, level up items, crafting items, toys, tonics, consumables, trophies and teleport stuff. That being said, my bank has thus multiple tabs that are dedicated to specific characters/classes to contain certain full gear types. Tho i do try to max that out on my main ofc. My alt characters always have 92slots in inventory (1x standard 20slot bag, 4x 18slot bags, cause cheap). and i can swap them out there if i feel like it. Then -usually- i just have additional weapons in my characters inventory, which i do/may use on that particular builds. And last but not least, some foods, oils sharpening stones and crystals with different functions which yet again i share among different characters. As well as permanent portable provisioner for my wvw needs, which i happen to play a lot as well. Followed by Infinite fractal omni potion, cause i do daily fractals with different characters. For starters, i have an copper and mystic salvage kitt in my shared slot.

20 slot invisible bag