Any ideas on uses for all these milk bottles?

I don't know about the small ones but I have used the larger ones to store water from the kettle that is stale and normally thrown out before adding fresh. I use this water for plants in the house and greenhouse rather than waste.

Larger ones (although for smaller scale small ones could be used too) are useful when decorating as they can easily be cut with scissors and the bottom part used for paint. Slightly less stable than a tin but can be disposed of after use rather than cleaning. In a similar manner I suppose the small ones could be used for mixing paint, dye or other things.

Be interesting to see other ideas ...

Thanks Tracy ^^ I'll see what I can come up with

Hi! I don't know how they look like, so I am just using my imagination I guess, they have a handle ? (We don't have 1 pint milk bottles over here, usually ppl buy their milk in cartonages).
Works with all plastic bottles: You can decorate them with decopatch and pretty paper or acrylic color and arange / fix them in groups as vases for flowers, wrapped by bast fibre. Or maybe hang them up on wire with dried flowers or later this year with some little branches of pine or christmas trees. Or just one flower per bottle and a really small amount of water? Like a floral mobilé.
In case you dont like flowers There is a a tutorial for a cute elephant I found: http://sparklepetal.wordpress.com/2011/10/12/milk-bottle-elmer-the-elephant-tutorial/

(My first board activity, hopefully links are ok.)

thanks Jule W! The elephant sounds so cute ^^

So I guessing it is about the size of a palm or bigger?

elementary schools might appreciate them as donations for the art department, too, so if you get them a lot you could save the ones you don't use and then donate them to a nearby school.