Staples has the PayPal Here Card Reader for $15 - 27% off in cart (requires log-in and black offer box on page; refresh page if doesn't appear immediately) = $11. Add three to cart to reach $33 - 3 x $15 rebates (limit of 3 redemptions) [Exp 12/31] = $-12 with free shipping. Allows users to accept PayPal, debit, and credit cards or send invoices on their smartphone or tablet.
Microsoft Store has the Incipio Inscribe Pro Stylus & Pen (Silver) for $3.97 with free shipping. Normally $20. Has a solid metal body, works on all capacitie displays, and has an integrated ballpoint pen.
Ends at 9PM PT. Rock A Deal has the iGo MicroUSB Portable Power Pack (MICPWRBST) for $5 with free shipping. Similar portable microUSB packs are priced around $20 and up. Built with 1560 mAh rechargeable battery, and includes a USB cable extension.
Ends 12/3. Groupon has the Press Play PocketFolio Wallet Case for iPhone 5/5S or Samsung Galaxy S3 or S4 (Multiple Colors) for $10 + $3 shipping = $13 shipped. Features built-in impact-resistant shell with space for up to four credit cards and some cash. Magnetic clasp closure.
Newegg has the Vantec Power Gem 3500 mAh Rechargeable Portable Battery (Blue, Black, Pink or White) for $13 with free shipping. Has two USB ports and measures 4.45" L x 2.32" W x 0.59" H.Goes for $29+ elswhere. Has great Newegg user reviews.
Ends at 10PM PT. Woot! has the 72-Pack Sony Stamina Plus Long Life Alkaline Batteries (AA or AAA) for $15 + $5 shipping = $20 shipped. Claims to have up to twice as much power than standard zinc carbon batteries. Found for around $1 a piece as part of smaller packs; these are $0.35 each.
Rock A Deal has the myCharge Summit 3000 Rechargeable Power Bank (White) for $22 with free shipping. Can charge 3 devices simultaneously, features a 3000mAh battery and includes a built-in USB charging cable and built-in Micro-USB and Apple connectors. Good Amazon reviews.
Rakuten.com Shopping with Deal Yard has an 18-count of Duracell Rechargeables StayCharged 800mAh AAA NiMH Batteries, DX24B6TB (three packs of 6) for $32 - $10 off with coupon code VMEDEALS [Exp 12/24] when you use V.me Checkout = $22 with free shipping. Retains power for up to 365 days while not in use and can be recharged hundreds of times.
Ends at 9PM PT. Daily Steals has the Incipio Atlas IPH955 Waterproof iPhone 5 Case (Black, Blue, or White) for $25 with free shipping. Goes for $50+ elsewhere. Impact-resistant case with tempered glass front is waterproof up to 2 meters (6.6 ft.). Includes a splash-proof headphone adapter.
Ends tomorrow. Newegg has the IOGEAR GMP10K GearPower 11000 mAh Mobile Power Station (White) for $35 - $10 rebate [Exp 12/3] = $25 with free shipping. Has LED indicators, dual USB outputs, and includes a micro USB charging cable.
eBay with Daily Steals has the PowerHolic Qi Wireless Charging Pad (White or Black) for $25 with free shipping. Features a 3 LED charging indicator, concentric wave design to dissipate heat and is compatible with all Qi-enabled devices
Sale extended through 9PM PT. Rock A Deal has the Mophie 4000mAh Juice Pack PowerStation (Red and Silver) for $33 with free shipping. Supports any iDevice as well as a wide-range of USB-enabled devices, has a charging output of up to 2.1 amp and is capable of switching between 500mAh/1A/2.1A charge. Over $70 at Amazon, Office Depot, OfficeMax.
TYLT has the TYLT Vu Wireless Qi Charger (black, blue, green and red) for $70 - 50% off with coupon code 50off_ty!t = $35 with free shipping. Qi (pronounced "chee") is wireless charging used on compatible Samsung, HTC, LG and Motorola phones among others.
Lightning Deal! Ends at 11:30PM PT. Amazon has the Kensington K97110US iPad Air KeyFolio Pro Plus (Black) for $60 with free shipping. Sells for $100+ elsewhere. Designed for iPad Air (iPad 5), has an ultra-thin Bluetooth keyboard with 7 selectable backlight colors, magnetic clasp, and premium leather texture.
Today only. Best Buy has the MetaWatch MW3007 STRATA Watch for iPhone 4S and 5 and Select Android Mobile Phones (5 colors available) for $100 with free shipping. Features Bluetooth 4.0, link alarm that lets you know when you're out of range of your phone, and comes with weather, stock and calendar widgets. Best Buy user reviews are pretty evenly split. Check out the PCMag review.