Weberence.com

Well this is a once chance in a life time, your chance to buy your own number from 1 to 1000. Simply pick the number you want (if it is still available) and few days later receive it through post!
Onethousandpaintings is the company behind this and what they offer is simple:
“One thousand numbers = one [...]

 
Smithfield is a little pig like all others, he runs, eats, paints etc. Who knows what possessed the little pig that thinks he is now a painter. Not sure if you can call this painting, he merely moves the paintbrush and smudges the canvas Nevertheless it is an interesting concept.

You can buy his artwork from [...]