I wanted to pimp my kit ukulele and was looking around for ideas for stickers and decals. Found this one in passing which seemed appropriated.
Note this is a sticker and not a decal, so it is not flush with the body of the instrument. Also think carefully where to place it, so it is somewhere out of strumming distance, to avoid rubbing and maybe wearing it off.
Quite easy to apply. There is a backing on the glued side and protective layer on the top side. Consider your placement first. Then peel off the glue backing, press the sticker on and smooth it out from the centre. Finally carefully remove the top protective layer. The sticker feels quite solid and is about a 0.5 mm thick. The glue is strong enough to provide a solid grip, so again consider placement carefully before applying. A quick and easy way to personalise your instrument.