So I wanted to designed some common magic weapons to give my PCs for overcoming damage resistances and immunities, but I didn't want to give them all uncommon or better items because I know they only get a few and I have my eye on giving them armor and wondrous items as well. So I created a little table of random common rariety magic weapon properties. It's in the link below and I also made a PDF you can download.
http://worldbuilderblog.me/2015/08/06/100-common-magic-weapon-properties-in-a-pdf/
http://worldbuilderblog.me/2015/08/06/100-common-magic-weapon-properties-in-a-pdf/