People of course jump immediately to walking android. But I think the walking dog robot/quadruped or something similar could be really useful. It can carry thi

People of course jump immediately to walking android. But I think the walking dog robot/quadruped or something similar could be really useful. It can carry things, function as a power bank, "fetch" things (depending on navigation) at a nearby store or restaurant for you, maybe function as security or monitor on dangerous streets. Fetch help if you're injured or disabled. Help lift things. Hell, maybe even carry you on big ones. You don't need to solve as many balance issues, lower expectations of intelligence/capability, etc.