ThinkGeek cuts up to 75% off select clearance items. Even better, get $10 off orders of $60 or more via coupon code "POWERFLOWER". That's among the best dollar-off coupons we've seen from ThinkGeek in this year, although we saw $20 off $60 or more in our expired mention from a week ago. Shipping starts at around $6. Deal ends April 4.