SockDreams now carries some card-themed items. The prices are pretty reasonable, especially for company-made items, which use very environmentally-friendly, minimalist packaging. SockDreams offers free shipping for US-based orders and their staff is made of win, awesome, and helpful.

I'll list the items that might particularly interest the magically-inclined here:

Poker Suit Opaque Thigh-High Stockings ($6)
Striped Over the Knee Suit Pattern with Bows and Cameos ($10)
Backseam Version (no bows/cameos) ($8)
Card Suit Sock Garters ($22)

There are quite a few more items on here that might work out for shows, but I'll leave those for you to browse. Follow this link to go to the main page.