I found a bucket of Cave Men, and Dinosaurs, years ago, at Wal-Mart. I loved the Cave Men figures, as they went perfectly well with my Grenadier Hill Giant figures, from the early 1980's: similar style, similar size, looked perfect standing side by side on the gaming table.
Well, I found them again: link. They are actually a Tim Mee product, available on Amazon.com (see link, previous sentence). They can be used for AD&D Hill Giants, Ogres, or even as Cave Men, for your games. Unfortunately, these figures come in poor colors: mine came in flesh-colored plastic, so I only had to paint the parts that weren't flesh (hair, loin cloth, weapons), then apply The Dip, and matte clear coat, before putting them on my gaming table.
Some folks were interested in these figures when I posted about them, a few years ago. Just wanted to share where they can be had, for around $0.25 USD/figure (shipping is not included)! Cheers!