@S_r_stone well really I don't have the skills, but it might be fun to try to develop them¿ 💨🔥
@alchemistbbc If the requirements are reasonably light duty, $8.99 for a five pack is tough to beat.
https://www.amazon.com/LM2596-Converter-3-0-40V-1-5-35V-Supply/dp/B08NV3JCBC/ref=sr_1_3
@MakerWerks yes... it'll end up being like a "dying 9v battery" circuit for a guitar Fuzz stomp box. So light duty indeed. Thanks for the link.
@alchemistbbc I have zero qualification for an opinion but voted anyway as Americans tend to do.
Make it yourself sounds like more fun if you have the skills to do so.