I got another MicroSD card that was on sale on Amazon but it was not listed as a Cyber Monday Deal. But my dad got a jumpstart pack, which is basically just a battery with a way to career your devices and start your car if it needs it.
I normally start my Christmas shopping by the time the kiddos are going back to school (which is about mid to late August here where I live) and I'm usually finished by Halloween. Because of this, I really don't see a reason to participate.
While we don't do Black (& blue) Friday, we do take advantage of Cyber Monday. They are places we normally purchase items anyways such as Vitacost for supplements & Wet-Noses for dog treats & they have some good deals.