Design a Pack T-shirt
(This one would be a nice momento for a Cubmaster)
Have your Cubs autograph a white T-shirt with crayons, or draw a picture. Cover T-shirt with damp cloth and press with hot iron to set design.
Blue and Gold Tablecloth
Get a twin flat sheet that will fit over your table. Get blue and yellow fabric paint. Using the paint have the Cubs make their handprints on the sheet, and perhaps personalize with their names and dates. Each year this is a project that can be done using the same tablecloth year after year. Keep the tablecloth and award it to the first Cub in your den to attain Eagle.