This may be old news to some, but it's new to me. I found out about it quite accidentally and now I can't stop! I've been doing it all morning.
If you take a regular image and go here: http://homokaasu.org/rasterbator/
You can Rasterbate it for free.
Just crop the photo. Select the size you want.
They send you a pdf file that you can print.
It's easy. Cool too.
Check it out...
You can make gigantic daisies. Who wouldn't want one?
Wait there's more.
Blow yourself up, or your honey.
I can't explain all the techy hoo-haw, but this is what a Rasterbated image looks like up close.
The New Digs will soon be covered in Rasterbated splendor.
Out-(of ink) T. mages from rasterbator(link above)