Depending on the grade you teach, you could use this activity as a Get to Know each other activity in which they will apply their understanding of fractions to also share a bit about themselves.
Students choose a whole shape that they want to work with. If you have struggling students, I would say a rectangle would be fine, but otherwise, I would encourage them to use a circle, triangle, hexagon, ect.
You may want to assign them a shape, have them choose from random, or allow them to pick.
Depending on students' level, they will receive one of three sets of 3 "given" fractions that they must use in their project. The must also choose 2 - 4 others to complete their whole. This will allow you to assess their understanding of adding fractions. Students are given fractions with different denominators and must calculate how much of their whole they already have and come up with 2 - 4 other fractions that would complete their whole.
Each fractional piece will also tell a little about them. For example, maybe 1/3 is that they like to sleep, 1/2 is that they love to play basketball, etc. until they have at least 5 pieces that equal exactly one whole.
I have students share their final products with each other in a line up/fold up situation a few times before turning it in. If you have time, you may want to have them each share out, or could have a couple share a week over the course of a few weeks.
*If students struggled with the first set of fractions or first shape when assigned, I assigned them a different set of fractions to work with.
*Resource links attached as in teacher info. as well.