Always forgetting appointments, even when you put things into Google Calendar? Why not get it to SMS you before the event?
To do so, you'll need to add your phone number to your Google Account first, which can be done by going into Calendar Settings and then going into the Mobile Setup tab. Enter your phone number, and hit the Send Verification Code button, and Google will send you an SMS. Punch that code back into the settings page, and, once Google has validated your mobile number, you'll be able to add SMS reminders to your events.