If your storage and power needs aren't already met then this is impulse purchase day for you. Grab a 4400mAh power bank for 12 bucks and/or a 16GB USB3 flash drive for nine. Doesn't get much cheaper than this.
Today on Amazon, you can pick up a GoPro HERO3 Silver Edition for just $229, or $20 off the list price. GoPros don't go on sale very often, so if you've been meaning to skydive from the edge of space, this is a good buying opportunity.