These are all things that come in handy every day if you're an Aspie trying to get stuff done. Calendars and diaries to keep track of where you're supposed to be and what you're supposed to be doing in the face of executive dysfunction, and reminders to keep you on track. Maps so you can find your way around if your sense of direction or internal map is unreliable. A notebook for jotting down extra things that need remembering which crop up through the day. A camera for taking a photo if you haven't got time or a pen for a written note - a photo of a flier on the noticeboard to remind you of an upcoming event, of your breakfast cereal box so you remember what sort to get when you go shopping, of your car's licence plate because you can never remember it when you're filling out forms.
But that's a lot of stuff to carry.
Fortunately, you can get the lot in one handy device. You can even make phone calls with it.
What they also have going for them is that they're discreet and ubiquitous - many people have touchey swipey phones, so a person using one doesn't stick out. This is a big deal, because a lot of adaptive technology (devices designed to help make life easier for people with disability) is kind of conspicuous, and does mark you as an outsider.
Being able to use a common, everyday and (relatively) cheap item as a specialist disability assistance device?