Our categories are pretty granular compared to some. We've got a Beauty category, which is mostly me (haircuts, waxing, makeup) but includes kid haircuts as well, and a Toiletries and Cleaners category, which includes toilet paper, laundry detergent, deodorant, trash bags, toothpaste, etc. I guess the reason I split those out is that the Beauty stuff is more discretionary; I can put off a haircut, but I can't put off buying toothpaste. We also have a category for Prescriptions, Medicines, and Dr. Visits.
Food is split into several categories: Groceries (this includes school lunches, when the kids buy those), Will Restaurants, Seppie Restaurants, S & W Restaurants, and Family Restaurants. My husband drives the spending in our individual restaurant categories, because I budget as much to mine as he spends in his (and my restaurant budget often just goes into my fun money budget). Treats go into our restaurant categories, too. If he buys a chocolate milk on the way to work, or I buy a Coke or coffee, that's not considered groceries, even if it came from the grocery store.
Part of the reason we have so many categories is that we (I) get resentful if things aren't "fair," but some of it is that if we just dump all the food together, we end up spending a lot more. If I tell my husband, "Hey, you spent $60 at restaurants last month" he will make a concerted effort to cut that down. If I just said, "Hey, we spent way too much on food," then it's less clear how to cut spending.
We keep our heat set to 57 at night, and 62 during the day when I'm working from home. When everyone is home, it's at 67. Sometimes we turn it up to 68 if we're feeling reckless. During the summer, we rarely use the air conditioning, but when we do, it's set for 78.