The Red Witch
Since cellphones don't exist, why not make something to use magic with?
I design the magical crystals to the shape of an iPhone. You can use it for anything, store currencies, record events, make facetime calls, send a message, anything an actual mobile phone can do. The good thing is that you don't need to pay every month or exceed the limit, it gives you direction when asked, and the internet is accessible wherever you go.
I wanted this to be out of the world, but since I made a prototype and will be used during my talk with Rebecca, I hope Grandfather can help me advertise it.