This was an activity we stole from the fabulous http://www.jenniferslittleworld.com/!
I should have used cardboard like the website suggested but I used paper and it all went terribly wrong when it stuck to the newspaper on the table! But I think the girls enjoyed it!
This was great for the 4 year old to practice “sorting” I wrote the colour word on each ring and she’s very good with her reading and knew what colour to put where.
For the 2 year old I just let her have at it and she did rainbow coloured ones!