I've been buying ankle weights myself. Found 10 really nice Rebok ones at a thrift shop a few weeks ago for $1.50 each to add to the collection. I see them at garage sales all the time for next to nothing as well. They're not too big, easy to carry around - I've never looked for anything else. I've got a mix of 5 and 10 pound weights. Just toss on the number of need for the job and I'm good to go.
