Square semi-hydro pots? Source?

[MateoinLosAngeles]

I've used something similar to these for small plants: Amazon.com

I usually drill the holes but I have also used a soldering iron which you can get for 10 bucks on Amazon.

If you ever seek novelty pots I recommend looking for "pencil cups" or other classroom, organization cups, bins, etc. They sell all sort of stuff made to store toys, legos, crayons that are completely suitable for orchids of all sizes. I use these for Cattleyas: https://a.co/d/2bjoZSa

I don't have any S/H plants in the small acrylic squared cups right now, but I'm attaching a current photo of one in the patterned cup, don't ask me how I plan to repot it