http://www.遊行抗議準備 Sign Making . My Sign Handle Pictures Included

http://www.*****/article_t/Immigration/22778377.html#top.com

1) buy three pieces of wood( Homedepot) and nails ($5 in
total)
2) build the handle as picture 1. Picture 2 shows the size.
3) print a poster (Fedex Kinkos, $4)
4) staple your printout onto a cardboard
5) nail the cardboard onto the handle
Have fun then!