It’s a great idea, but I was looking online and regular sharps containers for home use go for about 8 bucks online. Who has access to a 3D printer and the time to process all those caps, but doesn’t have 8 dollars to spend?

Sounds like a great idea! Your title says “Looking for help”, maybe you should specify how people can help you. Do you have any knowledge in 3D modeling and want to try it yourself or is this more like a pitch of your idea so interested people can realize it?