These MIGHT be veering into tchotchke territory, but they are also really handy!
Stick these adorable squishy little buddies on the ends of your knitting needles to stop stitches from sliding off when you shove your project into a bag. Guaranteed to cut down on swearing (from that particular event, anyway).
These fit knitting needles US size 2 and up.
They're also the only thing in this shop that isn't handmade/exclusive, which makes me feel weird, but here we are.