I used to collect jars and bottles of all kinds. I had several dozen, and no two were alike. I liked the very old medicine bottles, and wine and liqueur bottles.
@sistergolden: it does. I used to put the smallest on the window frames. Not the sills, because the cats liked sitting there, but the top of the bottom window. I used sticky-tac to keep them in place so they wouldn't fall when I wanted to open the windows.