One time when I was on a work trip years ago, I left my camera on a bus and never saw it again. I have since decided that would never happen again, so I 3D printed an invisible AirTag lens cap that simply attaches to my camera so I never have to worry about losing it ever again. Here's how I'm planning to keep my camera secure, and some other options you could consider if you don't want to use a 3D-printed lens cap.