I planted these few terrariums recently and two were given to my friends. Both types of glass containers were from IKEA and I don't know about others, but I definitely prefer containers that are just plain simple so that the plants can stand out and look their best.
I don't like to use frosted or coloured containers because they let in less light for the plants and steal the limelight away from the plants. I certainly also don't like to use those containers with surfaces that are folded because it will mask the view of the plants and distort their appearance. The only reason why I chose the second container type is because I wanted to use a variety of containers to create diversity.
Anyway, I will comment about other related issues in subsequent posts.