The Phone Bag
If you have trouble remembering your mobile but always carry your bag then why not combine the two with the 1970’s Telephone Bag.
The telephone bag is a fully working phone, though it’s not really a mobile as it does require a jack to connect. The handset also functions as the bags handle whilst the front of the bag contains the buttons you’d expect on a normal phone.
Available from La Pochette for $295, found on Sci Fi (it also comes in red if black just isn’t your style).