For when fridge Chess is to complicated and fridge Noughts and Crosses (Tic-Tac-Toe) is too simple.

Print out 42 tokens (1/2 one colour and 1/2 another) and insert a 4mm x 2mm magnet (glue may be necessary) and play a Connect Four style game on your fridge. Print less and play connect 3 or print more and play connect 5. Or just one or two for show, it's your filament.

Inspired by the tokens (bits, pieces, counters or coins?) from the Milton Bradley version of Connect Four I played way back in the 1980s. Printed in red and blue in the photo example because yellow is the only colour filament I don't seem to have at the moment. Made to get some Fusion360 practice.