HP tree picture and multifandom story search notes

Nine months to a year ago somebody did a picture of a tree at Hogwarts, covered with romantic carvings like "M.F. + O.W." Does anyone remember this and know where I might find the it?

Also, some story searches; mostly just so I don't forget what I was looking for, though of course if anyone recognizes any of these, I'd greatly welcome links.

Harry Potter
--Sirius and Remus are having sex at Grimmauld Place when Kreacher interrupts them, and Sirius stops so that he can yell at him. ETA: Found, thanks to deepsix.

--Snape helps Remus with potions and gets a crush on him, and then Sirius comes in and acts like a prat, and Snape sees the two of them being intimate afterwards in the corridor. ETA: Found, thanks to isiscolo.

--Sirius and Remus have sex for the first time. Sirius feels as though he needs to take a crap when he's being penetrated and compares prostate stimulation to needing to pee, and Remus tells Sirius that he's entirely too comfortable with his own excretion. ETA: Found, thanks to silveryscrape, only as it turns out I got both the characters and the fandom wrong; it's really an Orlando/Elijah story.

--Sirius goes to Remus's house post-GoF and panicks while taking a shower because he feels trapped in the small bathroom. ETA: Found, thanks to penknife.

And, having said all that, this might be a good time to repimp hpstoryfinders. Because it could be a really lovely resource, if only it had more than two members. The community's for slash, gen, or het searches, since inclusivity is cool.

Smallville
--An AU in which Clark becomes a hooker when he loses his parents and the farm. He's hired for Lex's birthday, and Lex has to warn him that his father has videocameras set up in Lex's bedroom. Written around the same time that Livia wrote "Just Pie." ETA: Found.

--Lex and Clark have sex in a cherry orchard, and Lex enjoys the symbolism, only Lionel sees them from the mansion and forces Lex to return to Metropolis.

--Clark is dating a boy in college, but it's all very casual, and then he starts a relationship with Lex which isn't casual at all.

SW: TPM
--Obi-Wan is sent to crawl around in a sewer, because...there's a dead Jedi in there? (It's been a very long time since I read this one.)

The Professionals
--An AU in which Doyle is an artist suspected of drugdealing, and Bodie is sent to investigate him.

--Christmas in the house of a million cocks. ETA: Found.

--Doyle and Bodie are sent to the beach to recuperate after Doyle is injured, and Doyle goes on a long run in the rain.

--Bodie and Doyle are investigating the disappearance of a...pilot? historian?...on an island that sacrifices people once a year by burning them in wicker constructions ala the ancient Celts.

--Cowley watches a romantic interlude between two soldiers during the war. ETA: Found.