For work, I used a high-quality touch switch board. Which has a powerful MOSFET transistor at the output/

Aluminum stick for LED strip 15mm*6mm

A 24 v 12 volt power supply, I installed in the printer power supply case on an insulating substrate with thermal paste

the power cord for the LED strip, I took to charge the phone with a flat section.

The rest is performed according to your desire and taste.

Touch switch - https://aliexpress.ru/item/4001110854961.html?spm=a2g2w.orderdetail.0.0.6cb24aa64j4i3M&sku_id=12000016302061381