If you’re adept at 3D printing, this adorable Adabot model could perhaps be adapted to the task.
If you’re more craft-inclined, or had a different character in mind, you can come up with your own design that leverages your existing skill set (or provides an opportunity for new ones you always wanted to learn).
I've got a bad habit of making everything a laser cutter job…but really, you could use anything…from papercraft to a teddy bear to a Godzilla toy!
Normally I’d aim for a nice enclosure with all the parts and fasteners hidden as best as possible…but wanted to use a different tack for this one. Putting the electronics in plain view invites questions. “What’s this thing? You made this? Can I make this too? What’s Arduino?”
We can make a tidy board stack using the Data Logging shield. Or the RTC breakout works with just a little more soldering & wires.