Based on which LEDs is it better to make a programmable LED strip?

Question

Arduino

I ran into a problem that I did not find LED rails with tightly planted diodes. I asked the people who understand such modules better than me and they told me that, either on order, or solder it myself. Well, here, as usual, questions began to appear. On the one hand, you just need to solder 60 2mm diodes and plug in the controller, but what kind of diodes? what controllers? This is where human experience is needed, which I would like to borrow from you.
1) RGB LEDs are needed
2) I will most likely program on the basis of arduino mini or nano
3) It is desirable to have a thread holder for LEDs, as they will be planted very tightly, so a ready-made frame solution would be a nice bonus
If it is possible to send a link to the product in a particular store, I will be very happy.

Answer 1

buy separately WS2812. to breed and order simple boards with the right amount and pitch. zagovnokodit to taste and possibilities.

Answer 2

did n't you try that?

Answer 3

Maybe a search on Ali LED display will help.
It is not clear what shape you need to arrange these 60 diodes - 10x6 or 30x2.

Answer 4

Wouldn't that density be enough?
Addressable High-Density RGB 72-LED Strip, 5V, 0.5...

Answer 5

You can take LEDs similar to those that are in the phone (for flash)
Instead of white, you can probably take any color