Here's a couple from my junk box, either or both are yours for the cost of shipping, if you can stand the sight of them. These are both the standard kind that mounts behind the bottom bracket. The purple one is ugly, but more adjustable (you could paint it, maybe?)



The kind I have on my Univega Nouvo Sport (my only kickstanded bike - it came that way) is one of these Greenfield jobs, cheap and plentiful on the big auction site, and work with a nice solid spring action "clunk."