I have a fortune in art supplies lying around.
Can I just paint, instead?
LOL
[if you really want to annoy people, download some guitar and keyboard apps for iPhone and play with them while you’re waiting in line somewhere]
Painting works ;)
I have a couple drum machines and sequencers on an Ipad but I don’t get out much to annoy anyone else...so I annoy myself to make up for it.
Perhaps I could just record an 808 kick drum, play it on repeat and have the next great (c)Rap hit...