I'm also taking suggestions for stuff Mayors should be able to buy for the city.
City Coffers are provided on a per-tick basis on a large number of factors.
I'm going to give Cops and SWAT Officers basic items by default, but the PD can buy Upgrades. Buying a PD Vehicle, Adding Weapons (like Shotguns for Cops, Tear Gas for SWAT), and maybe even Body Armor / Crowd Control Helmets for dealing with incoming damage, making them more lethal and able to withstand injury better than the people they're after.
On the other hand, I want things like frivolous spending. The registration of city holidays (Hail to the Mayor Day, Mayor's Birthday). Also Embezzlement. I think the Mayor will be able to purchase vehicles for themselves, and simply transfer money to their bank account.