I got into 3D printing so it could aid my other hobbies, one of which is repairing and restoring classic video and pinball machines. I had to rebuild some of the old transformer blocks that sit in the bottom of Atari video game cabinets and get rusty, dusty, etc. One collector designed a restoration kit with a new anodized metal chassis, stickers, fuseholders, etc., which makes the chassis look like new again. My added 3D printed touch was to replace the old gray fish paper fuse cover that is usually missing and a cap for the extra hole in the chassis which is used by some games for an extra fan plug. I came up with a fuse cover and plug using Tinkercad. I'll post the link for Thingiverse once I have a chance to do the write up.