If you are in the US Amazon is a great option - https://www.amazon.com/Pack-Clear-Boston-Round-Black/dp/B072HNRNGK?crid=2PL3IW2S9M0WY&keywords=boston+round+bottles+2oz&qid=1538139928&sprefix=boston+round+%2Caps%2C161&sr=8-3&ref=sr_1_3 would be one listing. You want 2oz glass boston rounds.