Mechanical Fixing of LED and PIR Module

Hi. The Seeed LED and PIR modules are really easy to work with. Now I have my project working I would like to mount them into a box. Can anyone recommend some suitable stand offs / screws or fixing techniques to securely mount the LED and PIR to a surface.

Many Thanks

Since the Grove PIR and Grove LED Module have slots, my suggestion is to use Spacers and standoffs to attach the Grove module and base board.