2 Month Advanced Designer Subscription $16.15 or 2 Month Master Builder Subscription $24.65

Getting a subscription to Netbricks is like being handed the key to a never-ending toy store. Once you've signed up, you can browse the company's gigantic collection of Lego sets, which spans both classic and modern themes. Netbricks ships your chosen set to your door—but not before sorting and sanitizing each brick. Families can then build such staggering creations as a Star Wars Sandcrawler, the White House, or a medieval castle besieged by a dragon.