Before you pretty funny, though quite useless concept - Air Mouse for Notebooks.
All the electronics in it is concentrated on a small chip, flexible, and its body is made of soft plastic, which can be inflated if necessary, connect the USB-cable and is ready for operation.
But after using it can be blown off and it will take a minimum of space traveler's bag. But do ordinary mouse for notebook occupy so much space that there is a need here in such inflatable mouse? :) Oh yeah, one more dubious bonus - in the water it does not get wet and will not sink, so if you see fit to work on a laptop while lying in the bath or pool, then this mouse is very suitable for this :)