Friction mount for compact relay module and small SMPS, for 3d printer power control

EDIT: see better way of controlling this relay from gpio below.

These 5v relay modules are really handy, except they have no mounting holes.

https://www.aliexpress.com/item/Free-Shipping-5V-low-level-trigger-One-1-Channel-Relay-Module-interface-Board-Shield-For-PIC/32708600505.html

They handle up to 10 amps of 250v which is more than enough for almost all desktop 3d printers, which is why lots of people use them to control their 12v or 24v power supply either with a raspberry pi or po