Well now that sandbags are past useful it important to know how to clean things.
All carpets that were flooded must be ripped up and thrown out.
All bedding that was wet must be either dry cleaned or in the case of mattresses thrown out.
Children's toys particularly soft ones, need to be destroyed or dry cleaned very professionally. The worries are the fact that flood waters have brought sewage to the surface and thinly spread it around everywhere... Flood waters are filth, I live next to a cemetery with crypts and it flooded once and aside from all the sewage from the area about forty bodies were floating around the place, some very old and some not so old... So... Just wash everything...
Also, great disinfectants are the condensed citric cleaners which act to thin oils and just destroy everything with acid, also bio degradable and safe enough in small amounts to be put into the water table...
Affected electronics should be sorted into piles with memory and without and those with memory like HDDs or internal WWRAM should be placed in desiccants and allowed to dry slowly in a controlled way if you want your data back.
Buy a ton of rice, it's a great way of absorbing moisture and if you have wooden floors putting an inch of rice down of sodden flooring can help bring it up in a way which wont bend to many boards... It depends on temperatures.
You can also put electronics in rice to absorb water. A mobile phone placed in a bag of warm uncooked rice will usually come back to life after a swim... Not always though.
Anyways, I hope everyone is safe and healthy and that only stuff and not people were lost or hurt.
Please, also, when you think it's time to take a break from cleaning and fixing your own shit and have a rest, don't. Walk outside and down the road and give a neighbour a couple of hours free help. It's times like this, when whole communities suffer together that getting out and helping someone else is the most important. Lot's of people can't deal with the shock of losing possessions and need help just to calmly piece back together a normal life. Help your neighbours and they will help you.
Here's hoping for some sunshine.