This is just some random perks I thought of sorry if I copied anybodies ideas I just made this account not but 10 minutes ago, and haven't looks at anybodies post. 
 
 1. Double the power - dual wields any weapon for a certain amount of time.(pushing 
    the envelope a little bit right?) 
 
 2. Shield - instead of dying from 2 hits from zombies it takes 3, or 5 hits if you 
    have jug. 
 
 3. Mystery Perk - a perk you buy for a certain amount of money, (not over 4000 
    dollars   I think that is really pushing the envelope) and it gives you any perk 
    that is qualified to be in that map.    
  
 4. Supplement - gives the guns in your arsenal 50% more ammo. (maybe once the ammo 
    is gone in all your guns it could possible disappear.) 
 
 5. Censored revive - when you buy this perk you pick a certain area in the map and  
    that part of the map maybe a 50 feet radius if you die in the area you get      
    revived automatically. 
 
                                   Equipment: 
 
 1. Flash mob - you lay it down on the ground and any zombie that is in the radius of  
    the blast is temporarily blind, and walks around randomly all over the place.