Store idea : the Calvin Ball and basket.
The Calvin ball is a one time purchase item that when deployed on a portal behaves like a shard. Its strictly a novelty and has no effect on gameplay. Deployers can recall it at anytime which could lead to an associated badge for distance traveled.
The basket is a single use beacon that has the added feature of a score counter. The deployer can select whether it is for enlightened, resistance, or both.
Neither item can move or be deployed in an anomaly zone and maybe their use should be suspended on anomaly days.
With these items local communities can hold their own events, run anomaly drills, or create unique First Saturday activities.
It solves two issues; revenue and player engagement by giving the players their own means of creating activities (something thats proving to be successful in PoGo).