I am the Personal Progress specialist in my ward.  Each month I present the girls with ideas of value experiences they can work under the value of the month.  January is Faith month, so I chose to present them with the opportunity to work on the Faith #1 goal--which encourages them to pray twice daily.  Since we (should :) brush our teeth morning and night, a tooth brush seems a natural reminder for saying prayers morning and night.  So this is the idea I came up with.  Attach the following poem to a tooth brush:

Saying your prayers is like brushing your teeth--

it's a habit you form, a commitment you keep.

You should brush your teeth both morning and night,

the same with your prayers if your saying them right.

Don't let your spirit or teeth begin to decay--

PRAY (and brush) at least twice a day!