I love finding beautiful, colored glass bottles and have sold a number of them since joining Etsy:
Etsy Pickers and Sellers Team (known affectionately as "Epsteam") bought this bottle:"Epsteam glass bottles"!" she said.
My teammate, and now customer, Julie Jansen, has a wonderful shop called Stella Erwins where she sells repurposed vintage glass (most of which she purchased on Etsy) made into gorgeous bird feeders, like these:
blog, where she wrote about buying her new bottles and took some pictures of her collection (the one she bought from me is on the right display, fourth from the left):
Edie Clark for this picture of her collection):
Epsteam, of course)--you can find and collect them one by one, or purchase an instant collection:
"Oops! Or: There Goes Another Etsy Sale" (yes, it's about what you think it is) and the other is "When Selling on Etsy Lifts My Spirits," the story of a man who bought that first red bottle above, the swirly one with the yellow felt craspedia flowers, and why he bought it
Numerous articles on collecting antique or vintage bottles can be found on the internet, as well as a variety of books on Amazon, if you'd like to familiarize yourself with what to look for.
Or, if you're like me, you can simply collect ones that you like!