This one is great if you don't have a lot of space: https://www.amazon.com/gp/product/B01881FNNQ/ref=ppx_yo_dt_b_asin_title_o07__o00_s00?ie=UTF8&psc=1
You can add this under the top shelf for wine glasses too: https://www.amazon.com/gp/product/B075D8TN3F/ref=ppx_yo_dt_b_asin_title_o09__o00_s00?ie=UTF8&psc=1