answer:When I was a kid, I got an electronics kit for *********. It came with all kinds of whoozits, and the board had a gazillion little springs, a battery pack, and various switches and lights. You could snap the whoozits into the springs and make all kinds of electronic circuits. For a more serious electronics tinkerer, you could buy the individual whoozits and use them with a breadboard. If you want to experiment purely in software, there’s Virtual Breadboard.