I usually have ham and salad sandwiches, because that's what I make for DH's lunch on weekdays and it's already out on the bench so it's no biggie for me to make one more lol In cooler weather, I whip out the jaffle iron and do ham and cheese toasted sangas, sometimes with a bit of BBQ sauce and/or a slice of pineapple inside just for something a bit different.
If I'm not feeling into a sandwich, I might make simple nachos if I have corn chips and salsa laying around - just a pile of chips, dollops of salsa, grated cheese and pop under the griller, then a blob of sour cream on the side (and mashed avo if I have any handy!).

On weekends though, DH usually just buys HJ's or hot chips, or we have a really late 'brunch' (at, like, 2pm lol) of bacon and eggs on toast.

I try to get the kids to eat decent lunches, usually sandwiches or fruit and crackers etc... they usually just want junk but if I give them something healthy to pick at they usually eat at least some of it :/ I have grazers though so they just pick all day long, really :/