If you love Gridfinity and are using those simple AAA and AA holders, you probably need a place to store your battery charger.
 

This “sofa/couch” as it looks like holds an AmazonBasics Intelligent Digital Battery Charger with no problems, and does it elegantly. Placed just next to AAA holders, the power plug does not interfere with the batteries, and the charger is very easy to take out as nothing holds it but gravity.