Hi, I thought you may like this Mentalrobics exercise from Braingle.com:
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Remember it in the Morning

Do you ever remember something that you need to do right as you're about to fall asleep? After that, you can't fall asleep anymore because you are too worried that you'll forget it in the morning.

An easy way to solve this problem would be to have a pencil and paper next to your bed with a little flashlight. But if you don't have this handy, try putting something out of place. For example, throw a magazine or wadded tissue at the door. When you wake up in the morning, you'll notice the out-of-place item and be reminded of what you almost forgot.

You can use this technique for other situations besides falling asleep at night. For example, if you are in the car and need to remember something but can't write it down, open the glove box or ashtray and leave it open. When you park, it will be a reminder.
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For more mind exercises: http://www.braingle.com/mind/