Use coupon code 3793083966602 at checkout for $16 off your order at Big Skinny. They have mini card holders for $7.95 and wallets starting at $10.95 (the Sport one is on sale). Shipping is just $2.45 for first and $0.50 more for each additional. Good reviews on site. If you're looking for a thin wallet this could be the place.
Big Skinny site