These are colorful butterflies that you kids might like to make. They can run around the yard “flying” them on a piece of yarn or hang them from trees. Maybe some tacky/cute gifts for Grandma? hehe
The linked “ible” uses glitter glue to form the stained glass type sections for paint and as an edge trimmer. Very glittery in the sun.
Instead of paint you could do decoupage with colorful tissue paper, but you’d need to spray it with some sealer to make it durable for outside.
For a more challenging project, how about gluing on smaller pieces of tissue paper? Possibly you can find some black puffy paint to use instead of the glitter glue. It might look nice that way too.
These could look nice hanging at a window also. Or smaller ones could hang from a light fixture or could be nice Christmas ornaments. Glitter is usually great for Christmas! That way Grandma could put it out once a year!
Click title for link at Instructables.