The fun is trying to see what you like. I enjoy ice play so the fridge or freezer is a blast. Same with metal toys. But the cold toys are not a great starter to play because you can't possibly get juiced to it and your body will react/pucker to keep it out. So it's a great game when the vagina is already slippery and steaming, but before it can be tricky and if you aren't using it on yourself since glass and metal toys don't bend, you could get bumped in a not good way.