Mounting Clip for a single Relais 5V.
(e.g https://www.amazon.de/AZDelivery-1-Relais-KF-301-Low-Level-Trigger-Arduino/dp/B07V1YQQGL?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&smid=A1X7QLRQH87QA3&th=1)
Use some screws or merge the base plate with you design.
The author marked this model as their own original creation. Imported from Thingiverse.