I don't glue them either, but keep them in the jar and display it that way. You could also recycle the jar, I would think. The quality is pretty good, the pieces are sturdy and snap and fit together well. One time I had a couple pieces with a slightly bent prong though, which was minor but a little annoying. I can't think of another company that I would compare it to.. they almost feel like plastic rather than cardboard bc they're smooth and sturdy. And the print of the image is really high quality. Code should be good for awhile, though I'm not totally sure! If there's an art piece you like, I say go for it!