There aren't many OW's in Tahoe. Maybe the best at Donner is Captain Hook, over to the right of Black September. You can do an undercling traverse or go at it like an easier version of Brother from Another Planet and bat-hang across the thing (the only time the front of my calves have been sore). Be sure to bring 2 or 3 # 6s and save at least one for after the roof. Also the Labyrinth is over there, if you're into cool chimneys.

There are other OWs, one on the east face of snowshed and one at Eagle Lake cliff, although I haven't done them.