Once upon a time, a young girl with a love of Pokemon and her boyfriend's birthday on the way, decided to create a guitar of such awesomeness that she nearly wept...hang on, that was just from the glue fumes...
So basically, I took a load of my brother's cards that he didn't want anymore and stuck 'em all over a cheap guitar, trimming them to fit (yes, cutting into perfectly serviceable cards made me die a little inside, but I think it was worth it). It needs new strings and will be varnished at some point so that mucky hands don't mark poor Squirtle's little face...
With adhesive film it's more easily to make your guitar look awesome. :)