Hi, I thought you may like this Mentalrobics exercise from Braingle.com:
-----------------
Walk Into a Room

If you have ever walked into a room and forgotten why you walked in there, you have experienced one of most common types of absentmindedness [ For more on 'absentmindedness' go here: http://www.braingle.com/mind/277.html ]. If this happens to you, look around the room and see if something jogs your memory. Mentally retrace your steps and think about what you were doing when you decided to go into the room. If you still can't remember, go back to what you were doing. Frequently, when you stop trying to remember something it will pop right into your head.

To prevent this from happening in the future you can try two things. When you decide to go into another room, visualize yourself doing what you need to do, or tell yourself what you are going to do. For example, "I need to get my shoes." By doing either of these things you are ensuring that the task gets into your short-term memory [ For more on 'short-term memory' go here: http://www.braingle.com/mind/25.html ].

When you are walking to the other room, try not to get distracted. This can delay you long enough for your short-term memory to forget what you need to do.
-----------------
For more mind exercises: http://www.braingle.com/mind/