The stitch marker is another of the tile wine glass markers I found on eBay. (The seller is taking time off from eBay to have a baby, but here's the URL.) This time, I filed a groove around the edge of the tile and fitted a wire into the groove. The tile is varnished to render it waterproof.
The socks themselves are my favorite Wendy's generic toe-up sock pattern — with feather & fan leg, short-row heel, and a turned-picot hem. I used a provisional cast-on. There are 64 stitches in the foot and 72 in the feather-and-fan portion. I used size 0 Knit Picks DPNs.
Next up? My "Sorted into Slytherin" socks are blocking tonight, and I'm already working on the second "Sorted into Hufflepuff " sock!