As I only have limited space to store and put up any equipment, I've invested in a door pull up bar, and a resistance band and a couple of sizes of dumbbells (2kg and 3kg). My approach is to follow Mark Sisson's bodyweight training (see his blog - marksdailyapple.com) on one of the exercise days and on the other day use the dumbbells and resistance band to do muscle compression (resistance exercises) from a plan I was given as a result of a personal weight training interview last week (again to cover the whole body and types of Paleo movements suggested by Mark Sisson).
This may help, or not for those with limited space to use.
This may help, or not for those with limited space to use.