Olympic track cycling medallist powers toasting a slice of bread, which takes everything he's got and leaves him exhausted: https://youtu.be/S4O5voOCqAQ
That reminds me of a thread I saw on an Internet forum a few years ago about some guy suggesting powering his fridge with a bicycle during a power outage. Turns out this is an extremely complicated problem which is probably best solved by ignoring it.
I bet you would get better results directly spinning the compressor via a flywheel rather than trying to generate the electricity to run the refrigerator.
Yeah, toasters and microwaves take a ton of energy, 800-1000W.
Things like laptops and some desktops could be easily powered by bicycle, though. I managed 220W for 30 mins, and could probably idle 50-75W for hours, which is more than enough for multiple laptops.