Doggie Popsicles:
Beef Bouillon
Crunchy rolled rawhide sticks (or some other dog treat strong enough to use as a popsicle stick)
small plastic juice cups (or popsicle forms)
plastic wrap (if you are using juice cups)

Make beef bouillon as directed
Pour cooled bouillon into cups - about 1/2 full, depending on size of dog
Cover cups with plastic wrap
Poke hole in plastic wrap and place rawhide stick through hole into liquid
Freeze until solid
Remove cup and serve!

You can also just freeze the bouillon in ice cube trays. I try to buy the salt free bouillon when I can find it - or you can make your own beef stock. I also make the bouillon a little weaker than directed to cut down on the amount of onion since all bouillon has onion powder in it. I have tried lots of different things for the sticks - and have found that the skinny, rolled rawhide treats work the best. They are crunchy and break into really small pieces when the dog eats them.