Who doesn't love a good decal, right? These add character to all sorts of things.
Approx 3"x5" (80mm x 130mm). Cut from Outdoor rated vinyl, the good stuff.
These aren't the quick slap 'em up and move on, here is how to use a decal (remove the clear!). Half way down this page "Applying a Vinyl Sticker".
There is currently no way to just ship an envelope at this time so best to either order a bunch or just add them to an order.