Board Edge Mounting Kit - Pack of 4 : ID 1116 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Full Set of Plastic PCB Circuit Board Mounting Clips Technics SH-DJ1200 DJ Mixer | eBay
Terminal, Indicator / Contact, Spring Clip Style, Original E6dz-10927-A Designed To Make Proper Electrical Contact From Gauges To Printed Circuit Board - #M-10927-1 - National Parts Depot
Universal Removable PCB Fixed Clip Hook Circuit Board Clamp Electric Iron Bracket Welding Table Soldering Tin Platform Tool|Integrated Circuits| - AliExpress
Clip-on PCB shielding system for RF, RFI, EMI shielding