*flails* I have no idea how it had never occured to me until now that I really need to read a bunch of femslash cliche fic.

Tropes wise, I second soulbonding, physical bonding (in the "Whoops, we handcuffed ourselves together and lost the key" sense), telepathy and animal transformation, because those are some of my favourites.

I'd also like to add bodysharing (my favourite slightly more obscure cousin of bodyswap), truth or dare, strip poker (or whatever. Strip prime-or-not-prime! Strip three dimentional chess! Strip card games on motorcycles!), characters finding fanfiction about themselves, and truth spells/curses/serum.