What to use in the 'cupcake suprise pan'?

[forcookssake]

I have been given this lovely cupcake baking tray, with a spike to impale a treat inside each cake.

I have so far used Rolos and mini Reece's Pieces both with chocolate sponge. They were really tasty, but I'd like some other ideas... classic and crazy both welcome!

• Nutella spread in vanilla or choc sponge

• Fruit compote/jam/marmalade

• Mini marshmallows

• fresh/frozen blueberries or raspberries

• crumbled Oreos/cookies

• lemon curd

Sorry, just re-read your post (I couldn't see the pic properly on my phone and thought it left a space in the cake to be filled). My ideas, therefore, are a bit naff and won't work! Sorry x

Thats a cool tin Forcooksake, i use a similar method for my cupcakes, but baking the cakes first then piping whatever i want in the middle with a D230 nozzle, thin long nozzle goed right to the bottom, really simple.