It is not a bad idea to keep some puff pastry in the freezer when it goes on sales. It can make for a really quick snack or emergency finger food or appetizer. Not a bad idea to have few canned of tomato sardine in the pantry for cases like this as well. I always loved the spicy sardine filling, it was a flavor that I grew up loving and still love. Too bad Evy didn't like the sardine filling, so Edda and I had most of it. :-P
This is one snack that is really easy to make with the frozen puff pastry. You can get creative with all sort of fillings that you could imagine. For example, curry chicken with potato, tuna, apple, kaya, red bean paste, nutella, cherry, strawberry, char siew, etc. As long as you can imagine it, you can make it!