This kind just slips over the door jam/molding. No hardware required. comes on and off quickly.
For dbs, just get something like this:
DB Set I got one at Walmart for $35. I load all the weights onto one handle. My set went to 42lbs, but they also sell extra plates. I bought a few 10lbs plates for $5-6 each.
You can also just buy the plates and make your own bar from a 18 inch long, 3/4 inch piece of pipe, automotive tube clamps, athletic tape, and some
basic bar collars (from the sporting goods store). It's more bad ass, anyway.