A bag of resistors. I remember those. We all bought at least one. We also bought a bag of capacitors. They'd last us for a couple of years. The hardest part w

A bag of resistors. I remember those. We all bought at least one. We also bought a bag of capacitors. They'd last us for a couple of years. The hardest part was sorting them so we could find the one(s) that we wanted at the moment.