Best Buy discounts a selection of LEGO building sets, with prices starting from $7.49. Choose in-store pickup to avoid the $5.49 shipping fee, or bag free shipping with orders of $35 or more. A couple of best bets, both with pickup:

LEGO Star Wars Anakin's Jedi Starfighter for $14.99 (low by $1, most charge $19 or more)

LEGO Minecraft The Chicken Coop for $14.99 (pictured, low by $1, most charge $18 or more)