What is best "cross" training?

Hi. I bruised (badly) or cracked a rib last week playing soccer (yeah, stay away from sports- bad for your health). Anyway, normally I would give it more time to heal because it hurts but I have my first oly tri in about 8 weeks. I can't really run right now (I ran 2 days ago and it hurt far more after the run, so giving it another week or so to recover more before I venture out again to test it) and can't swim either because every time I pull it stretches out the ribcage, which doesn't feel great at all. So, I have been riding and spinning in the gym, which is cool and the bike course on the tri is a tough one, so wanted to focus on that anyway. But I am wondering what other kinda of crosstraining I might be able to do to stay in shape and maybe even help me get ready for the tri? I'm not worried about the cycling part at this point but am worried about the running and swimming. Anything I can do? Or just let it rest and bike to stay in shape? Any thoughts welcome. I guess another options is to not do the tri, but I'm thinking HTFU on this one!