If they did it, YOU CAN TOO! These people actually designed and built their own seismographs. Read all about them.

Shane Sheperd was a science student who decided he wanted to build his own seismograph to use in an experiment. He wanted to find out if he could figure out the location of a bouncing basketball in a gym using his device. How did he do? Find out here! A Boy and his Seismograph

Brian Carusella has figured out a way to use stuff you can find at most any hardware store to build a seismograph that will accurately record vibrations from passing trucks and people walking by it. He also has some other modifications that you can use to make the device much more sensitive–sensitive enough to record earth tremors from many miles away. Read how he did it! Bizarre Stuff you can make in your kitchen