Dual parallel LED strip holder (for Prusa enclosure or otherwise)

I made the lovely Prusa 3D printer enclosure out of IKEA Lack tables: https://www.thingiverse.com/thing:2864118. I wanted to add LED lighting to it and I had some 12V LED strips lying around from China. (I got these, but any 12V LED strip will do: https://nl.aliexpress.com/item/LED-Strip-5050-LED-lights-12V-Flexible-Home-Decoration-Lighting-1-2-3-4-5M-LED/32806752857.html?spm=a2g0s.9042311.0.0.27424c4d2tO0z0).

Because my Prusa is 24V, I had to place two strips in series. PLEASE NOTE: make sur