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.
The owner of a miniature steam railway put up for sale in 2023 ... The original asking price had been £495,000, which had included track, an engine shed, three stations, four engines and ten ...