Take advantage of sales on items like drink mixes (i.e. Kool-Aid) and gelatin. In my area these periodically go on sale for 20 for $2.00, with the drink mixes, or 20 for $10.00, with the gelatin. These are handy "sweet tooth" satisfying items to have on hand that are a breeze to make, and often for next to nothing, in between paydays. Plus these items usually have healthy shelf life.
With the drink mixes these can be turned into a summer time treat by pouring into ice cube trays, using coffee stirrers for the sticks, or Popsicle forms and then put into the freezer for an hour or so but more cheaply than if you went to the grocery store to buy a package of Popsicles.
And ladies, remember the Old Wives' Tale about how gelatin is supposedly good for fingernails (rumored to help strengthen them)!