You must have been at a different tea party than I was at. In Lansing, with Joe the Plumber, the vast majority, 99% were hand made and many were quite complex, both in design and statement. I only saw a half dozen pre-printed signs.
Perhaps it is because they can't spell!
It does look manufactured when it is uniform.
Grass roots is all unique with a similar theme.
Stop Fascism and Socialism. Stop spending my grand-kid’s money.