I had an english muffin in the toaster and went to take out the trash. My husband noticed the toaster was still on, and recognized he didn't know how toasted I would like it. So, he stopped it when the bread was lightly toasted, so that if I wanted it more toasted I could put it back in when I got back, but it wouldn't get over-toasted.
I told my husband I wished our laundry closet had more storage. He researched and ordered a shelf that would fit perfectly.
Today, I saw my partner help to emotionally regulate my toddler and waited to teach lessons learned once my toddler was calm again. This is a technique my partner is not used to doing, and I think it's mental load because he was able to remember the new technique and put it into practice as well as the emotional labor of helping my son to regulate.
He reminded me today that I still needed to book a hotel for our vacation in November, indicating he's been carrying the mental load of ensuring it gets done.