I won't try to argue that anyone needs the Philips Hue lighting system, but it's undoubtedly appealing to anyone with a penchant for WeMo switches, Nest products, IFTTT recipes, and the like. Today's $30 discount is the best Amazon has ever offered on the starter pack.
[Philips Hue Wireless Lighting Starter Kit, $171]
Update: Ugh, this deal seemed to disappear right after the post went up. We'll keep an eye out and let you know if it comes back.
Even if you won't use it regularly, keeping a solar gadget charger handy is a great idea for power outages or camping trips. This model from Anker has fantastic reviews, and is $10 off today with a promo code. [Anker 8W Single-Port Portable Foldable Outdoor Solar Charger, $30 with code G3D58SVF]
Amazon is currently offering a $5 off coupon on 3M's scratch removal system, and signing up for Subscribe & Save will take an additional 15% off the price. You can cancel that subscription at any time, unless you ding your car frequently, in which case you should keep it. [3M Scratch Removal System, $8 after Coupon and Subscribe & Save]