I went and read a few fanfics and have seen some images and just to add to my old list, although I do NOT ship Yukio and Shura (I'll keep it at the sibling relationship, maybe even not that...like, one-sided or something), it is absolutely
hilarious reading YukioxShura fics and having Shura be all...well, SHURA and Yukio being completely oblivious. Fun stuff.
The Rin ships that are fun to read are RinxIzumo. Though I don't exactly ship them (it's interesting to see some one-sided IzumoxRin though), their fanfics can be pretty godly too. :3
An example of a pic I came across that spurred this opinion:
(Is this fan-made or official? Does anyone know?)