Since washing machines were mentioned I just made an assumption. Washing machine.
yebbut c?
On the central topic, no fire risk, a second line of defence tip - before you go away chuck stuff all over the floors, particularly in bedrooms/any home office - pull drawers out and half empty stuff on the floor - any burglars who enter tempted by scattered vegetable matter will assume your place has already been burgled/anything of value taken.
Of course you may choose to live like this anyway.