Toasteroid has a Kickstarter for their toaster that allows you to create pictures or send messages on your toast, from both remotely or nearby!
The possibilities of sending secret messages to your travelling latchkey Father are super exciting, as depicted by the girl from their Kickstarter video:
It works like this:
...and allows you to nag from near or far:
To be fair, it looks really cool:
So at $98,000+ already raised, toasts all around!