So I have found many apps that do this, but so far none that are accessible.
The scenario is common for sighted folks. They can't remember where they parked their car.
The app lets them "bookmark" a location and return to it with breadcrumbs later. It uses the GPS, but not a map. You can see many apps to solve this problem.
I thought the MyWay app would do this, but it turns out it won't run on iPAD or iPOD Touch because it requires the compass. Many of the visual apps that let you return to landmarks work fine on the iPAD or iPod Touch, providing you use an external GPS.
We'll be driving across the country on vacation in a few weeks and I don't have an iPhone yet. I do have Navigon and an external GPS. Both work great, but the feature I would use most when we travel is simply the ability to return to a marked location.
For example, I need to find our truck in the parking lot, pull out a suitcase and return to our hotel room. An app that would help me do that would make me feel more independent!