My GKs love Paw Patrol, but I have not seen jelly rolls. As suggested, you could buy yardage and cut strips. Although, this would cut up the pictures a lot.

I recently made two pillowcases for my GS who turned 2 this week. I can't wait to see his face when he opens package tomorrow. Click image for larger version. 

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I just ordered more fabric this week to make a few more for friends' GKs.