I remember when I was in grade school we used to bring in treats for all of the other kids. A lot of the times it would just be cupcakes or something like that. These days, it is much less common. My wife and I both work in public education and with all of the food allergies and things like that which many kids have they have pretty much stopped kids from bringing in outside treats like that. My wife and I also just celebrated a couple of "milestone" birthday's a year or so ago and for each of our parties, we made sure to specify that we didn't want any gifts.