One of my Lords and Ladies favorite quiet games is called "Find It". It's basically a clear tube filled with tiny plastic beads that hide objects. The goal is to find all of the objects. We decided it would be fun to make our own version of this game using a large clear plastic Christmas ornament.
To start gather as many small objects as you can find to hide in the ornament. Since this is a Christmas themed game, we decided to use rice to hide the objects to give the illusion of snow. Also, make sure you use a plastic ornament. Since this game is hands on, there is a chance it could shatter if you use glass.
Pour a small amount of rice into the ornament and then add a couple of the objects. Keep layering the rice and objects until the ornament is mostly full. You don't want to fill it up too much, you want to be able to move the rice around.
Once the ornament is full, use a little hot glue to glue the top of the ornament on and then start playing.
Caution: this ornament may be too heavy to hang on a tree. But since it's so much fun to play with it won't spend much time there anyway.