My daughter had mufti day in school. The theme was sports. She goes to iceskating school but does not have a special dress for it.
So what would she wear for the mufti.
I went online and found a iceskating badge in google images.
I took a printout of the badge and made it sturdy by sticking a card paper behind.
Next I took a ribbon and attached it with the help of a tape.
Just made her wear skin coloured tights ,the same that they wear for iceskating.
And so we had a last minute skate dress ready.
The kids loved it at school and the teacher appreciated it.