Who doesn't like a good chocolate cookie?! I don't think such people exist, to be honest. Chocolate cookies eaten on their own or even better, dunked in milk, provide you a next level experience. I connect these with cold weather, warm feeling under the blanket, hot cup of coffee, milk or hot chocolate and a movie.
Regular chocolate cookies can be improved by adding something crunchy into the batter. My favorite addition are always toasted and roughly chopped hazelnuts, but you can use some other nuts, of course.
When it comes to choosing the cookie size, kids will like giant chocolate cookies. They are both, fun to make and to be eaten.
I must say I prefer regular sized cookies, but this decision is totally up to you.