Now $69, down 30 percent off its usual $100 sticker price, this miniature engine kit seems to suggest otherwise. Get It! Made ...

For those aspiring to make the move from car enthusiast to master mechanic, online retailers like Amazon are full of listings ...

The $29.99 all-metal desktop Stirling engine kit is one of the simplest. It can be assembled in 15 minutes and is recommended for ages 14 and up. Also for $29.99 is the Exploring Kid Steam Engine Kit.