I designed this simple Raspberry Pi Stand, as a cool stand for placing my Pi nicely on my desk. It prints with supports, and should slip right onto the USB and Ethernet ports on the Pi, so no screws required. This stand does make the ports unusable, but for me that's not a problem, because i mostly connect to the Pi over SSH.
It sits firmly on a desk, but if you are worried about knocking it over, you can easily stick it down to your desk with double sided tape.
This a part of a Raspberry Pi weather station i made, which you can find instructions on how to make on Instructables here: https://www.instructables.com/id/RPi-Weather-Station-and-Digital-Clock/