Lock collectibles
Use the bag called a “safe” this is exactly what it does.
Second thought… it could be “invisible”..
Not sure which one exactly…. but one of them DOES do what you are asking
I play when I can and help who I can
Yep, you need a “safe box” or an “invisible bag”. They’re easily craftable by your leatherworker, tailor, or armorsmith. Or you can buy one off the Trading Post.
http://wiki.guildwars2.com/wiki/Category:Invisible_bags
Any of these will prevent you from accidentally depositing crafting supplies or miniatures in those bags, as well as preventing their contents from appearing in vendor windows. You can craft them yourself, or buy them on the trading post for a reasonable price.
I’m a big fan of invisible bags, and most of my characters have one or two on them for all the junk I want them to keep around, like extra clothes, extra weapons, miniatures, or crafting supplies.