I hope you aren't tired of Cabin Fever photos!
This Sterling engine ran on the heat of a coffee cup or a bowl of ice. Either way it ran great!
A classic Stewart vertical engine always looks good no matter what!
LEFT: A case where the engine is dwarfed by its stand!
RIGHT: A Stewart, but not like any I've seen
LEFT: Fueling UP!!
RIGHT: Three miniscule engines
LEFT: Anyone need their laundry done?
RIGHT: Another model airplane engine, but note the helical flywheel!
These are two examples of the "world's smallest lathes." These were commercially available several decades ago! They featured a full array of accessories and they are completely operational!
LEFT: This one was giving a bit of trouble!
RIGHT: One of the coolest electric motors I've seen!