I've been using guitar finger picks like these: http://www.promusicaustralia.com/gui...small.bk.2.JPG off and on for the past 10 years. No reason why one wouldn't work with the internet tablets. I think the most expensive one I ever bought was like $1 US.

My other fav stylus is any ball point click pen with a soft plastic shell. With the pen clicked in, the housing works quite well.