3 x 25 pushups (Used to do bench press, but that hurt my shoulder, so I stopped doing them I'd probably use a machine for these if I had a gym.)
3 x 6-12 dumbbell flies on the floor (I'd probably also do these on a machine )
3 x 8-12 standing low dumbbell chest fly (I'd use a cable for these if I had one and I would throw in some dips if I had bars)