If you're going to Thailand there are heaps of shops there that do Mini mods and stickers / decals.
Try MBK (mar boon krong) in Bangkok. This huge huge shopping centre that will literally take you a few days to complete. There's a car shop I think on level 3 or 4 that has mini stuff, and also on the ground floor not far from Noodie there are several graphic decal shops.
Simply show them that pic and give them measurements and say "do it".
They'll have an artist copy it and make a decal for you.
Cost about fifteen Australian bucks for that decal.
No ping pong balls....guaranteed..