An interesting low-cost gift for your favorite photog, the $24.99 Triggertrap Mobile Dongle lets you use an Android or iOS device as a remote shutter release for digital SLR or advanced compact cameras.
The dongle is compatible with more than 280 cameras, but you'll still need to download and install the iOS or Android app to actually use it. Those apps usually costs $4.99, but starting today the apps are free for the holidays.
That's not a huge savings, but it does mean that if you pick up the Triggertrap Mobile for a gift, the recipient doesn't have to spend $5 to start using it.