I teach the 3 and 4 year old children in my church, so I made these "binoculars" for each kid. They were a hit!
I took an empty wrapping paper roll, cut it up to about 3-4 inches,
figure 8 the yarn around the tubes,
tie the loose ends together,
and tie a string around to hang on their necks.
There was some serious plant and bird watching going on with these babies.