You are cool for offering to do this. I would be thrilled if wanted to do any of these (not everyone's cup of tea so I left more than one):

Merlin/Arthur established relationship with bottom!Arthur: a time when Arthur was travelling alone and Merlin used magic to make him 'feel' what he would if Merlin were there

White Collar Peter/Neal: a time when Neal got Peter to try a kink even though Peter really didn't want to, but then Peter liked it so much Neal regretted it.

Peter/Neal or Eliot/anyone of the team, sex outside in a garden or the woods (is that a kink? if it's not, then hairpulling kink).