rock climbing, indoor. going by the size of mine i would say it works either that or windsurfing when it gets warmer, also another one i do
if you want gym routines. theres a simple one you can do. get a bar, tie a rope to it, add a weight at the bottom. now hold the thing straight out infront of you in both hands. now roll the rope up all the way to the top and unroll back down. repeat.