I actually had a filthy mind too and was going to suggest masturbation as a great tactile exercise but I wasn't sure how old you were and when I was psychotic I just could not get off at all so I didn't want to suggest it if there was a chance it wouldn't work for you....

Also I just found this blog entry about how people with sz can actually tickle themselves...now that would be an experience and would certainly be distracting...
http://thebrainbank.scienceblog.com/...ophrenics-can/