They are the perfect size for decorating tree .They also work great as fill-ins for empty spaces in your tree. Glass ornaments are a great gift. you can create a beautiful collection over the years for a loved one or yourself. Some people will pick one ornament each year that resonates with a significant experience they had that year to build a collection of memories that way. You can find large ornaments that may fit a window display, standard sizes for hanging on a tree, and miniature ones suited for a small tree or decorative space.