Press-ups/push-ups (same thing different name)
Pull-ups, but they are HARD, try "pulling up" with your feet out infront of you
Tricep dips on a chair. Sit on a chair with your butt right on the front edge. Grab the front lip of the seat of the chair with your knuckles facing forward. Stretch your legs out in front so that your heels sit on the floor and your legs are straight. Your butt should be off the seat by now. Gently lower your butt to almost touching the floor, then raise to seat height, this lowering and raising is one rep, repeat!
Tricep dips on parallel bars / a banister or two chairs back to back (but you will probably need people to sit on the chairs to keep them from toppling over). Grab a rail / banister in each hand whilst standing. Straighten arms and take weight of your body on arms. Lift your feet up to keep them off the floor, then bend your arms to 90 degrees then straighten them. I find this REALLY hard, but it's a good workout
Also you could use bottles of water or cans of beans as hand weights - a nice army exercise is hold your makeshift weights in each hand. Stand normally with your hands by your sides, then keeping your arms straight, raise your arms out to the side. Still keeping your arms straight bring them so that they are straight out in front of you, then lower. Repeat. You can reverse this so you lift up at the front and down at the sides.
www.stumptuous.com click weights and there's an article in the training section I think about how to train with household objects.
Good luck