I needed a "filler" week and poked around online. I choose ants as a weekly theme. It has actually become a wonderful theme!
I choose this Ant Farm. The "Fascinations" brand is popular on amazon.com, but many people had issues with them separating or cracking. I do not need ants on the loose. http://www.amazon.com/Toysmith-4050-...8761907&sr=8-5