X-Acto® 12" Heavy-Duty Plastic Paper Trimmer
This is my paper cutter. There are many like it, but this one is mine.
For something this cheap and lightweight for cutting up photos, this is by far the best choice.
There are plenty of paper trimmers out there, but they are usually either heavy ass wood ones or they are those cheapy sliding cutting ones and I'm just not a fan of the sliders.
I've got one here I've had for a few years now. I've cut thousands of prints on this easily. It probably could use a new blade by now, but it is still doing a pretty decent job as is.
I bought mine at a Staples store. I've included the link to buy it online if you are looking for a cost effective way to get many uses out of a paper trimmer that moves from place to place easily that is gonna last a long time. X-Acto rules!
Check it out at Staples.com