My dishwashing soap fell through a gap and went behind my refrigerator. I took a broom and got it to stand upright but I don't know how I can get it out. I can't pull my fridge out as it's in there tight so my only option is to go behind and there is only about 3 inches. Any suggestions on getting it from there?
Not sure how much of a hack it is, but I have one of these...
Known as "flexible grabbers", these are easily available from decent hardware shops or online.
They are specifically for getting stuff from behind radiators or under fridges.
A spring-loaded claw on the end will grip the offending item, although it can sometimes be fiddly to get enough grip to pull something up.
Use a strong long wire with a hook at the end. And a good supply of patience.