Since large blades are going to be hard to come by in the zombie apocalypse, the next best thing is a melee basher like the Glowbar.
The Glowbar is basically a crowbar that glows, hence the name. It's constructed from high-carbon steel that gives it extra reinforced strength for bashing a zombie's head in. The other benefit is that the steel is recyclable, so it's perfect for any eco-conscious individual out there. The luminous part comes from the silicate-aluminium-oxide-based powder coating, which actually glows ten times brighter. Just remember that the trade off here is that even though you can see better in the dark, you do leave yourself more exposed to zombies.
With each purchase of the Glowbar, 2% of the profits will be made to EFF, a non-profit organization dedicated to defending technological freedom.