Looking to start your own ghost-busting business? You're going to want a Mr. Ghost iPhone EMF Detector ($20). This nifty gadget plugs into the headphone port of your iPhone or iPod touch, and lets you check for potentially spooky electromagnetic radiation via a companion app. When you're not looking for stray souls, you can use it to check the levels of electromagnetic radiation sources in your home or office — things like your TV, clock, gaming system, or small child who just ate one of his "smart" toys.
If you're using Square to run the cash register at your small business, odds are you might already have an iPad mount — but odds are it isn't as sleek and functional as the Square Stand ($300). This modern white stand connects to your iPad 2 or 3 (no Lighting support yet), providing power and securing it to the counter. It also features an accessories hub that makes it quick and easy to connect a cash drawer, receipt printer, and barcode scanner, with a wireless connection to a kitchen printer, giving you a complete POS system in just minutes. Shipping in July.
It can be great to have a stylus around when using your tablet or smartphone, but finding space for one in your pocket — or trying to find one in a bag — can be more hassle than it's worth. With a diminutive size and included tether, the Wacom Bamboo Stylus Mini ($15) should alleviate both problems. It features a small solid brass body wrapped in soft-touch rubber, a smooth rubber nib, and a built-in tether that attaches to your device's headphone jack. All you have to figure out is which of the six colors you like best.