Pranks for my uncle

My uncle and I always pull friendly pranks and bully each other everytime we see each other (we live in different states so it's not very often). I'm just thinking that there has to be someone on this site who's a mastermind at pranks. I don't have much time so are there any easy ones that we can get a laugh out of -- and that aren't super crude?? Don't you think that when snow is on the ground, it's not the right time to pick me up and dip me in the birdbath?? Thanks for the thoughts! (mwah ha ha ha).

what are your uncle's pet peeves..or when he comes for a visit you could hide his clean clothes when he goes to take a shower, or when he is in the shower have his mobile phone ring and if he asks you to answer it then tell him it was a lady with a real sexy voice but she did not leave a name or number and she sounded rather desperate and she wanted to know what his favorite dessert was..or it was his neighbour who called to say that his pool was overflowing into his yard so he hoped his insurance was paid up