Think Geek now sells a somewhat downsized version of the Aperture Science Handheld Portal Device, which is good news for people that work in super cramped cubicles, as well as tiny baby children looking to perfectly accessorize a Halloween costume that was obviously their parents' idea.
At $60, the bite-sized gun features accurately colored lighting effects, portal-specific sounds and articulating zero-point energy manipulator claws, just like the bigger, sold-out versions. It also includes a display stand, which will be helpful if you're the first type of person we mentioned above. At just 12-inches, however, its cosplay potential is limited to children, as a standard ASHPD measures 30-inches long.
But hey, you know what they say: "It ain't the length of you Aperture Science Handheld Portal Device, it's the momentum cancelling abilities of your Advanced Knee Replacements." Or something.