Stickers! We like keeping circular stickers of our logo to give away.
We order stickers from StickerMule. You want the 2" Circle Stickers.
If you log into the firstname.lastname@example.org account using the LastPass credentials, you'll find that you can click "reorder" and order more. Typically we order 1,000 at a time.
Extra stickers live in the scissors/measuring things/wire clippers area, in the bottom cabinet. It should be labeled "Stickers".