Radio control offers a fun activity to child within the adult.
Radio control is cars, boats, planes. Electric and gas powered.
There are kits that you build and ready to use just minutes out of the box. Pretty much charge it up and go.
RC cars and trucks are not just for kids......I have a small RC car kit that was given to me as a gift last summer....I often take out and blow off a few minutes and have a few laughs watching the dog trying to figure out what it is.
One RC catagory has tickled my fancy......that is flight. I bought a ready to fly helicopter that gave a few brief momments of excitement.......have to order a $.25 part and I am flying again.
Not only the Helicopter.........fixed wing planes......I now have 3. Discovery.com has some rather inexpensive RC flyers that are easy enough to get started before moving up to larger and more expensive planes