How about some crazy sock stitch markers for your sock knitting?
These stitch markers are very lightweight and slip easily from needle to needle, up to US 6/ 4 mm. The set includes 7 mismatched socks, 1 each as shown, though yours will actually be from another set. Do to the hand coloring technique used, they may vary slightly. The markers will arrive safely mounted on a card. I've put them on a bulb safety pin so they don't get separated in your knitting bag. You can pin them right onto your project, use the pin as a removable stitch marker, etc. These are water resistant, not waterproof, so please refrain from using these while knitting in a blizzard or hot tub : )