What function do the wraps do? Are they like shawls? like bandages? what type of pattern are you looking for? Do the students make them or do you make them and have ready for the students? There was a thread earlier on how to make weighted blankets to sleep under at night as many illnesses benefitted from them. I made a vest this summer for my 10 yr old GD and found many patterns in the pattern books to choose from. Most of them had multiple sizes per pattern. Are you working with children, teenagers or adults? You didn't give many helpful details.