TV, unfortunately, are the worst offenders in most cases as they cannot be reliably opened. Things that are on the not hard scale to fix - cleaning robots, ink

TV, unfortunately, are the worst offenders in most cases as they cannot be reliably opened. Things that are on the not hard scale to fix - cleaning robots, inkjet printers (with fill-in ink), laptops (incl. board repairs as long as they are not a BGA), desktop pc, mowing robots, mowers (all 2 and 4 stroke variants), most battery tools (drills, sanders, saws, etc.). Overall stuff that can opened reliably, even if that requires specialized tools like bearing pullers or impact wrenches. Things that are hard - anything that uses glue as the prime assembly fastening choice, e.g. TVs and monitors (or just plastic clips). Cheap plastics (ABS) bodies are annoying as well. Fridges, no way to refill or fix the compressor. Serialized components that need specialized tools/software after being replaced. In that regard that would be my complaint - ease of disassembly and clearly marked parts, exploded views, schematics. Spare parts. Personally, I'd spend half a night to repair 30-40euro device w/o any documentation, just b/c I can -- but that shall not be the norm.