I love this container but wanted to be able to hook it to my tool bag. I did print the lid and hook/eye in PETG so it would be stronger. I decided on 2 pieces to make it easier to print and in case the hook/eye ever wore out you could just reprint that part. 

This uses M3 screws and nuts to attach the parts together. 

PS: The Remixed files are original size, but my prints for everything are scaled 80%.