I have always been fascinated to use the GIS tools & knowledge to resolve some of the issues for my wife and kids.
This one is for my wife, who usually is lost when doing shopping. Most of the navigational software's which i use on the mobile contains very few points of interest or are wrongly positioned.
So why not just bring the relevant points of interest from wikimapia (Open source points of interest) into something simple and mash it up with existing solutions such as arcgis online or google streetview.
Here is the presentation: