Back to the Future Light-Up Flux Capacitor by Running Press (RP Minis). This is a 1:5 scale prop replica and comes with a booklet.
Currently on Amazon for about $14: https://amzn.to/3NpvpKn (Affiliate Link)
Here are some photos of the mini Flux Capacitor and its packaging box.
Light-Up Feature. Flux Capacitor Fluxing.
