I chose to make a personalised phone cover. I've ordered this for a special someone in our house and am now hoping she doesn't read my blog before Christmas....
Photobox do covers for several models of iphones, Samsung phones and iPads. There are standard or tough covers; I chose a flexible soft transparent case for ours. Choose between a collage of photos or a single print to go on the case and then add a background pattern, or leave it plain. These cases start at £10 which I think is reasonable given the good quality and the fact they are totally customised.
Photos upload quickly to the site direct from your computer, or from Facebook, Instagram, Flickr, Dropbox or Google+, and you can save them in named folders (which is great for if you ever want to use them in a different project).
There's free delivery at the moment and all the last ordering times for Christmas can be found here - but be quick!
Disclosure: we were given some credit in order to review the Photobox site and product, but all views given are honest and our own.