You might consider getting some of the elastic exercise bands; they're quite portable, and easily stuffed in a suitcase.
Excellent suggestion. I've used Lifeline USA resistance bands for nearly 12 years. They are fantastic when I'm not at home and very durable. You can get the TNT power cable that would allow you to do squats, deadlifts, overhead press and with the door attachment in various positions you can do rows, tricep pull downs, punching and various types of curling to include mimicking a pull up.
With the PPU3 (power push up 3) you can do chest work as well as lunges, rowing, deadlifting etc. Almost any exercise you can do in a gym can be done with the cables. And they can be put into a small bag.
Punisher said:
I always like hearing about traditional methods and try to incorporate them into my training.
I've got a few that are cheap but effective. For the grip go to Lowe's or Home Depot and get the thickest closet dowel of around 6 or more feet in length. Standing in horse stance you extend the arm till there is just a slight bend at the elbow. The dowel is straight up at arms length, perpendicular to the ground. Slowly lower the dowel to parallel with the ground using just the motion of the wrist. Then slowly raise it back up and repeat. The closer to the end of the dowel the harder it will be. For added resistance you can add a rope and some weight. You can also go side-to-side as well as up and down.
Get a short dowel, perhaps two feet or so. Drill a hole in the middle all the way through. Run a strong rope through and attach something heavy. Grip both ends and roll it up and down while holding it out in front of you. Called a windlass.
Wet a simple towel. Wring it out till it is dry. Old wrestlers trick for grip strength.
Get two bricks or jars with sand or water with a wide grip. Get into horse stance and grip the tops with fingers and hold.
Stand in horse stance with arms out at your sides palms facing out. Grip them into fists as tight as possible and then open. Repeat as fast as you can, never sacrificing a good tight grip for speed but keeping speed up. Do for one minute straight and count. The record from what I've read is 300 times in one minute! Your forearms will be screaming.
Of course handstand push ups, body weight squats, various types of push ups etc.