Little Man loves building with his LEGO pieces. And Mr. Wigglesworth would love LEGO parts, except that’s a choking hazard for him, so he loves DUPLO bricks instead. Did you know that you can use the two types of blocks together?
DUPLO elements are much larger than LEGO elements, to make them friendlier to the younger crowd who are still putting things in their mouths. How much bigger? 2 LEGO studs length is the same as 1 DUPLO stud length. DUPLO pieces also don’t come in some of the smaller sizes (1x2x2 or 2×2 are the smallest sizes I’m familiar with, save for the DUPLO figures.

The DUPLO studs are too tall to fit into a LEGO plate, so that won’t work directly. But you can connect DUPLO parts to larger sized LEGO bricks! It’s not quite as strong as the connection between LEGO pieces, but it’s strong enough for many purposes. Once you’ve connected LEGO bricks to your DUPLO base, you can connect other LEGO elements to those bricks.

It’s also possible to attach DUPLO on top of LEGO studs, though in my experience, the “clutch power” (as LEGO describes the fearsome strength with which their elements cling together) is lesser. Here you have to do it in certain ways. You can’t connect 2×2 of LEGO brick to the bottom of a single DUPLO stud, the connection needs to go all the way across the DUPLO piece so that there’s enough contact for friction to work.

Ready to bring the old DUPLO out and build on top of them?