I'm starting to think that completely unrelated riders may be far more effective than filibustering. Don't like a proposed law? Pad it with enough crap until everyone thinks it stinks.
Killing a bill with unpopular amendments is indeed a time-honored tradition in legislatures everywhere.
...and then you can say "so and so voted AGAIST GRANDMOTHERS!!!"
I'm not so sure. In most legislatures, if you have the numbers to move an unpopular amendment, you also have the numbers to defeat the original bill.
I was kind of glad they added both firearms ban and abortion ban to the same bill, making sure it would lose.