3" x 3" stickers that can be applied anywhere and on anything. Rock them on your hydroflask, yeti, bike, macbook case, phone case, etc.
Magnets are $5 and is typically a favorite because of its transferrable use. These magnets have been car tested as well, assuming you don't have a lot of dirt and a messy paint job. :P
Shipping is free for sticker and magnet orders of 3 or more! Mix and match ok!