Don't know if anyone has tried this but we have a way to make a little extra on your athletic uniforms. We have started to encouraging teams to use outline numbers on team wear because of the heat here. They really like the idea of the jersey being the solid color thus having the open space for cooling. We use Stahls Thermo Film for the outline and save the middle of the number to apply to a parents, friends or any other persons garment that wants to wear the players number.
Basically 2 garments from one cut. 8" number leaves a 7.5" solid inner number. Just the right size for a t-shirt. You will always have extras to use. We have even completed a whole pee wee team with these leftovers.