Go Climb Your Wall

My brother is getting into rock climbing and was thinking about how to incorporate some holds into his apartment, because the weather is vancouver is not always so great and gyms can be expensive.  I thought about this too and found some ideas online (some are executed better than others):

* The one on the right might be the most practical for a rental apartment...the others look fairly permanent. This one has the holds screwed into plyboard then screwed into the wall...minimizing the number of holes put into the wall. *