Casio G-Shock GWM-5610 – the current model number of the original 1981 G-Shock digital watch. Resistant to dust, shock, water, and up to 20 bar pressure. Self-charges via solar power. Self-synchronizes to GMT by passively receiving continent-spanning radio time signals. Little bastards cost less than a hundred dollars and are effectively bombproof.
For washing clothes, remarkably little soap is needed to clean ordinary soiling. Washing machines are very efficient. Using too much, besides simply being a waste, can accelerate the degradation of some fabrics, shortening the life of your clothes, and on the extreme end it results in overproduction of suds. Most washing machines from the last 30ish years will detect this and stop their cycle until the suds have died down, so it also wastes time.