ThinkGeek cuts $10 off orders of $50 or more via coupon code "RTME10". That's among the best dollar-off discounts we've seen from ThinkGeek. (For further comparison, we saw $20 off $60 in September.) Shipping starts at around $6 or is free on orders of $75 or more. Deal ends March 31. A couple best bets (with prices after coupon):

Star Trek: The Next Generation Hoodie (pictured) for $49.99

Harry Potter House Robe for $59.99