Whipped cream has a short shelf life, but if you're looking for a simple trick to extend it and make a tasty dairy-free snack topping, Instructable user annahowardshaw has a dead-simple recipe for coconut whipped cream.
The basics of the instructions don't differ from your average whipped cream recipe, with the only change being using a can of chilled coconut milk instead of whipping cream. The results are supposedly just as thick, but with the added benefit of being dairy-free, which means a longer shelf life because the ingredients won't separate. Find the full instructions over on Instructables.
Coconut Whipped Cream [Instructables]