Help a Ninja Decorate His Fortress

Okay, I need some input from the non-decoratively challenged. One of the drawbacks that comes from being so macho and studly is that I have poor decoration skillz. (another drawback is that sometimes I'll unintentionally break things with my powerful male arms, just because I don't know my own strength, so being so studly is a mixed blessing). So this weekend I went to Home Depot (the evil empire