If a smart power plug is currently overpriced, using a Mini Smart Switch can be an alternative method, especially if it’s going to be a permanent change. However without any case or box it’s a safety risk. Adding a DIY simple plug power box and a socket might make sense, if you’ve got them spare. Essentially making it an extension lead.

Links & References

Simple Plug in Light and Switch – YouTube
https://www.youtube.com/watch?v=ZXaCaA4CEAw

Electrical Wiring Colours – A Complete Guide | RS
https://uk.rs-online.com/web/content/discovery/ideas-and-advice/wiring-colours-guide