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Street sweepers may look like a relatively modern invention but they appeared for the first time in the first half of the 19th century. Since then they become unavoidable and important part of many cities. Read more about history of street cleaning and street sweeper.
Domestic robots, robots we keep at home, are not that uncommon. First ones appeared in the 1980s and were just a little bit more complex toys. Today we have more complex ones that can help us with daily chores like cleaning and mowing.
Timeline of vacuum cleaners began with industrial revolution and it followed it closely. From mechanical variants over the internal combustion engines to electrical variants and even robots - vacuums changed through time.
Mop is an old tool (earliest texts that mention it are from the 15th century) but is still used and improved today. New materials and mechanisms make new, more durable or easily disposable mops. Read about history of different types of mop.