Earth Day Art with Coffee Filter Here is an easy craft for Earth Day with coffee filters. The process of color blending is fascinating, and the end result is beautiful. Steps Flatten a coffee filter and draw a pattern of Earth with blue and green washable markers.Put the filter on a tray and spray water on it with a spray water.Once completely wet, transfer on a paper towel and let it sun dry for 5 mins.Glue the dried filter on a paper. Benefits Brings out creativity.Easy and mess free process art.Using spray bottles helps with strengthening hand muscles. Materials Coffee filter (from dollar store)Washable markersSpray bottle (from dollar store)