Duplo-compatible base for Neighborhood Trolley

My toddler loves his Duplo trains. My toddler loves Mister Rogers' Neighborhood.

I thought it would be fun to mash the two together, so I found the wonderful Neighborhood Trolley model by ukcat https://www.thingiverse.com/thing:3458860 and mashed the base of it together with a brick created in the No-support Duplo SCAD file by by xmbrst https://www.thingiverse.com/thing:1045483.

I ended up needing to take needle-nose pliers and tear out some of the circle bits inside of the duplo piece in order to get it to connect, but I'm pretty sure you could tear almost all of them and it would still stick.

Works great, and the kid loves it.