Great Ball Contraption (GBC) at Japan Brickfest 2025 [video](youtube.com)3 points·by donpott·vor 8 Monaten·0 commentsyoutube.comGreat Ball Contraption (GBC) at Japan Brickfest 2025 [video]https://www.youtube.com/watch?v=5B6sGSleXZg0 commentsPost comment—