I'm sure everyone else has much more morally virtuous ways to spend money, but speaking from experience, this thing is super cool: https://www.lego.com/en-us/p

I'm sure everyone else has much more morally virtuous ways to spend money, but speaking from experience, this thing is super cool: https://www.lego.com/en-us/product/big-interactive-community-train-10428 https://www.lego.com/en-us/product/big-interactive-community... You get both the duplo pieces to build a train track and train stations, but also the train engine itself is battery powered, drives around and includes a sensor that lets it react to different sections of the train.