Had a fab time at this year's Mega in Devon, UK, where I discovered hundreds of tracking numbers on flags, tattoos, TBs, cars, dogs, caravans, camping pitches, T shirts, hoodies, banners, buggies and soft toys, among other things, including this one. I hope it travels well and achieves its mission!
Great to find someone else like me who shares their codes with a QR code. Saves so much time and effort!