Solving puzzles is something I try to fit into my life wherever I can. (Not jigsaw puzzles, mind you. I'm actually not a big fan of them.) Physical, mechanical, logical, word-based... doesn't matter. I love them all.
I've recently gotten into designing them, as well. Just last year, I designed a set of puzzles that led to combinations on some locks for a box of gifts for the redditgifts Secret Santa exchange. Here are some pictures.