What to do with excess solar power?

I have solar panels (4.1 kWp) and a home battery (6.6 kWh), but on your average sunny spring day the battery is full around noon and I still put somewhere between 5 to 10 kWh back to the grid, and I assume that on a long summer day this will be even more.

Currently, this is handed to my energy supplier (TotalEnergies) at the injection rate of 4.35 ct (digital meter, not turning back). When pulling power from the grid, I pay around 51.11ct 38.87ct per kWh (basically 25.8ct for the energy, all the rest are grid/transport/taxes). So running the washer/dryer during the day can save me a few kWh, but are there any other options? We heat with gas, and don't have AC, nor an electric vehicle (yet), so I can't be creative with those.

I read somewhere (not sure if already in effect) that you can join "energy groups" where if I'm producing to the grid and someone else is requesting from the grid, they get "my energy" and the other way around. I also believe Decathlon (at least used to) offered to buy excess power from other people (when the ruling of the reversing digital meter was overturned). Anyone experience with that?

// edit: Made a calculation error on the costs, accijns is € 13,60 MWh (so 1.36ct instead of 13.6ct per kWh). But still have a shitty contract in terms injection?