What are some recommendations for headbands? Some searches just show more on the thermal ones.

I just use the cheap elastic cotton sweatbands/headbands that you can buy in the sporting goods area at Wal-Mart. My wife calls them Richard Simmons headbands...from the 1980s aerobics era. I prefer to think of them as tennis or racquetball headbands. It keeps the sweat out my eyes until it gets saturated. Then I wring it out and put it back on.