I like to get new colored ornaments every year for our Christmas tree. An easy way to reuse ornaments is to make a DIY ornament Christmas tree. All you need is a hot glue gun, ornaments and spray paint.
Pick out ornaments that are the same size.
Hot glue them into circles
Build your tree up, use one less ornament for each tier.
If you are not happy with the colors, you can spray paint your tree to coordinate with your current decor.