The centers are actually t-shirt iron-ons I found on eBay, paid like 5$ total for them.
Put them on cotton fabric and boy were they a bear to get transferred onto the fabric and still had parts of them that didn't make the transfer at all but it's difficult to tell.
Sent my sis a pic of the red one before it was finished and she show'd my brother (the boys' dad) and he said wayyyyy cool,
so that's prolly close to what the boys will say too. :)
PS thanx for the comments :) :)
it's going to take a day or two for my poor back to recover lol