Mega man 2. It was my first Mega Man fame back in the day and I played the shit out of it. So I just play it every so often and it is just so comfortable for me.
Honorable mentions: soul blazer on SNES, the first few levels of the original DOOM, the first TMNT game on Gameboy, it is terrible but just so mindless and short.
It is a regular alkaline battery, so no I don’t send the old one back. It is not required you can just get the brush head if you like and use a rechargeable battery that you supply if you want.
I have been using Quip toothbrushes for quite a few years now and they seem to be going pretty strong. Every quarter they send me a new brush head and battery and your toothbrush is covered under wareanty as long as you have you subscription. I have rwally liked it and there doesn’t seem to be much risk of their support ending.
I bought a Zojirushi water boiler. It keeps up to 4L of water at any of 4 set temperatures ready to make tea at any time. I love it. It has a vacuum sealed inner tank so it doesn’t use much electricity to keep the water hot once it is up to temp. When it is getting low I just top it up. I let it go 24/7 and it has been amazing.
https://www.zojirushi.com/category/water_boilers_warmers/