I have a complete DIY solution here that works wonderfully in combination. The bus board is my own design, the PSU is from the internet, but pretty much the same as that of MFOS. I only enlarged the circuit board a bit so that it can also be attached.
I can verify both with a clear conscience!
I can recommend this AC wall wart, it is available in different versions and it is cheap. I use them too. I have the 1A model and so far no problems with almost 20 modules.
And here the busboard, which you can of course extend or shorten as you wish. Very easy. It is important to pay attention to the trace cuts under the resistors!
Here are a few more photos of mine:
Here is my Desk PSU with a smaller version of my bus board:
Here is the longer version. In the upper layout it is a little wider so that it can also be attached properly. These were the first versions, but still work fine 
And finally again in my case
I hope this helps a little. Greetings THOGRE