Pull up exercise
Pull up bar, or chin up bar. I've always wanted one, but too cheap to buy one. Until I run into this on a Thrift store. Five bucks. Sold. I've been using it everytime I pass this hallway. Only about three pull ups everytime. I'm doing it not by repetition, but by duration. So, I'd better loading up on protein, because apparently, I'm not as good as I was before.
3 weeks into it, and I notice my upper body shape is solid! So it does work. No miracles, but for five bucks, I'm not complaining!