This is one of my favorite Perry Bible Fellowship comics, put behind a cut because it may or may not be NSFW.
Next week I'll be starting an illustrated blog (not in this journal) of creative ways to boink. A few ladies have already received a description of the first position, "The Cheese Grater," and I am mucho excited by the responses :D As far as I know, the positions are original. (I haven't read any position books and the Kama Sutra was too boring.) So far, none of the positions require additional materials besides a male body & a female body.
Learning flash would be super useful in order to provide better illustrations. If there are any tutorials you particularly like, please forward them my way.