Here is a great tip for the day. I found this tip in a beared dragon forum.

Its possible to get your baby bearded dragons to drink from a hamster water bottle. I found a good way to train your bearded dragon is to velcrow the bottle inside your tank and to loosen the lid ever so slightly to allow the water to slowly drip out, leave it leaking for about a week by then you should find your bearded dragon drinking from it. At that time you can tighten the lid back up and voila your bearded dragon is now drinking from the bottle. Mine took Bearded Dragon babies 3 days to figure it out so be patient with them and they will learn to drink. It just takes time. Good luck with your Bearded Dragon training!