Anal play is a turn off for both of us, so no use for any of those toys. Also, anything leaving a mark or causing pain, no thanks!
I made the mistake of purchasing a set of nipple rings (2 sets actually)after reading reviews on another site said they were "pain free"... One is a set of round metal rings that you smash your nipple into the split. Those hurt so much trying to get on that I have never tried since! The other pair is on a little noose like rope. As long as I'm laying down, they are okay, as soon as I sit up though, they hurt! Also, since it was hard to get off I nearly sent my other half in search of scissors, I couldn't get them off fast enough!
I think I'll stick to pasties the next time I want to dress up my nipples, lol.