build your own radio kit for adults
An anonymous reader writes
"I'm an adult looking to learn how electronics work and have some fun building projects. But all the kits I've found online are for kids 8-10 years old, and they don't really explain the principles - they just color-code where to place components on boards. Are there any kits aimed at adults? I know if anyone has got the answer, it's this community."
HeathKit and Velleman - The classics, but mostly mentioned as an example of the "not aimed at adults" or the "not as good as they used to be" category
AdaFruit - Including the MintyBoost USB charger and Arduino kits.
One other common recommendation is "You're an adult, you don't need to put up with big brightly colored components and "put tab A in slot B" diagrams - make your own kit!"