I built a remote for the Duplo Train and my daughters had a blast with it. 100% original LEGO pieces, too. : r/lego
Amazon.com: LEGO DUPLO Town Steam Train 10874, Toys for Toddlers, Boys and Girls 2-5 Years Old with Light & Sound, Push & Go Battery Powered Set with RC Function, Gift Idea :
Wooden Bluetooth Remote for Lego Duplo Train : 3 Steps (with Pictures) - Instructables
LEGO DUPLO My First Number Train Learn To Count 10954 6332184 - Best Buy
Wooden Bluetooth Remote for Lego Duplo Train : 3 Steps (with Pictures) - Instructables
Lego Duplo Train Track System Set 10810 w original box | eBay
LEGO Cargo and Steam Train Bluetooth App - YouTube
Wooden Bluetooth Remote for Lego Duplo Train : 3 Steps (with Pictures) - Instructables
lego duplo push train 10810 with track system | eBay
Wooden Bluetooth Remote for Lego Duplo Train : 3 Steps (with Pictures) - Instructables
Wooden Bluetooth Remote for Lego Duplo Train : 3 Steps (with Pictures) - Instructables
Lego® Duplo TRAIN BLUE Station petrol station OCTAN | eBay
Wooden Bluetooth Remote for Lego Duplo Train : 3 Steps (with Pictures) - Instructables
LEGO Duplo 10508 Deluxe Trains Set NEW IN BOX - Retired 673419215794 | eBay