In short of ideas

[Grxcy]

...

 

[subbysecret]

Fill one bowl with warm water and one with ice and dip your breasts in them. Hold for thirty seconds and then swap.

Or... The warm breast gets nice sensations all day while the cold one gets pain all day... So you put all your pegs on the cold breast, and hit them off, you direct slaps to it, you pinch and twist the nipple as much as you can stand, put toothpaste on that nipple... Rubber band play... If you wear a bra, that breast stays exposed with the cup underneath.

Your warm breast gets nice caresses and massages when you play with yourself, is kept comfortable when you wear clothes... If you enjoy using a vibrator on your nipples, then it's the warm breast that gets the vibrations...

I saw another post this morning where somebody had to put as much of the ice as they could fit in their pussy (and ass) and let it melt out over a towel...

Not sure how you'd feel about that (I wouldn't want you to get an ice burn) - if that sounds a bit too much then maybe you could use ice on your clit and your cold breast's nipple while you warm yourself up with a vibrator or masturbate, but don't cum until you've melted the icecube completely?