Squarifying random audio files/wavetables with Serum can yield very interesting results. You can squarify a wavetable by navigating to the WT editor, selecting the arrow next to (enter formula), navigating to multis, and choosing proc:squarify. This will remove every other harmonic in order to squarify the file.

You can create very interesting bass wavetables this way using any sound with good low frequency content as a wavetable.