I really need to get one of those recording devices

Here's my biggest beef with me. I get all fired up and on a rant and then, I go home, eat some dinner, watch some Sci-Fi, go to bed and it all fizzles out of me. What I need is one of them there hi-tech flim flam vocal recording do hickies. Then I would be able to go off on a tangent and subject others to my opinions and not just irritate my daughter with my views.

Anyone have a suggestion?