from Intimate Weddings
Here's what you need to make your own little birdseed cake favors!
1 box of Knox unflavored gelatin
a bag of birdseed
twine or yarn
Add gelatin envelope to the boiling water in a large bowl and stir until dissolved. Add several cups of birdseed (it will be very stiff) and pack into the molds. Let them harden over several hours or put them in the refrigerator.
Insert the twine or yarn and pack seed around it to ensure a secure hold. Or poke a hole through with a piece of plastic straw and leave in until cakes are removed from mold. Then you can thread the twine or yarn through the small hole left by the straw. Set them in hot water after they have set for just a minute & they pop right out of the mold.
|image from here|