When writing stories I noticed that everything is getting sort of very similar, because it is always the same stuff just in different context at best
So far it looks like nailing breast and dicks is like most obvious topic for casual BDSM
using needles and skewers on them also looks reasonable
then Pussy sewing somewhat usable too

but this will be all of the non permanent stuff that I can come up with and it sort of start looking weird if you do same thing in different stories to many times even if context is different.

So does anyone have some other ideas what could be done in the story along with things above or what kind of scenarios (very generally) you could come up with to explain why it happens

As for example I see that one scenario for explaining something very ridiculous (like eating detergent capsules) is when someone saw something tv or internet or if they want to film it and post themselves
But what other reasoning could be used to come up with such an absurd idea?