Senku chuckled lightly. "Actually the hot air balloon was one of our more simple projects, but it's cut down a two day walk into a two hour trip so it's really done a lot for moving between a few sites. We have a car, but just one."

He considered it for a moment. "It'd be nice, but we don't have the manpower or infrastructure at the moment. People still live in huts. The last improvement I really made was getting stoves inside in the winter. They are still getting repurposed in the spring though. We recycle everything."