https://shop.littlebits.cc/products/workshop-set
seriously check out little bits. They have a lot of power, great hardware, and compatiblity with Arduino etc.
Don’t be fooled by the “toy” aspect. You can easily configure a minimally viable prototype that works! throw them in your 3D printed parts.
Pull them out and they are reusable!
Some of their hardware is really cool - like a smart home tech kit