This year our family decided to celebrate Lent together by giving up sweets. My son, did not get a vote in the matter. It made since to do this together so no one would be tempting the others.
The thing I did not count on was how often food - sweets in particular - are used as rewards and celebrations at school. Saying "no thank you" to those rewards and birthday parties is a lot to ask of a third grader. We have had to make multiple accommodations to work school life and Lent together.
If I had to do it all over again, I think we would do things differently, but we made a commitment and we are muscling through the best we can.