Kids would love to decorate their own rings and put their names on them. When their ring lands around the roll there could be a special activity or prize. Great idea - thanks for sharing it! DIY Paper Plate Ring Toss Game - great for kids!
I published a post about inexpensive and DIY sandpaper letters, with many ideas that work for sandpaper numerals as well as letters. Here I'll give resources specifically for sandpaper numerals and sandpaper-numeral presentations and extensions.