Where to get or how to make hollow sugar balls? I'm trying to create a set of liqueur and cream filled chocolates by hand. My current idea is, having created the chocolate for the outsides, to build up layers of it on a "sugar scaffold". I can then inject the filling into the centre and melt closed the hole.

My problem is finding or making a suitable hollow sugar ball to act as the scaffold. I want them to be 1 to 2 centimetres in diameter, robust enough to have the hot chocolate built onto them, and flavourless. I can't find anywhere in the UK to buy such a thing, and I'm not sure how to go about making them.

Can anyone advise me on buying, making or finding an alternative for this project?
An even simpler method is to freeze your filling until set but still pliable enough to work with. Shape your spheres (or squares, or tetrahedra, whatever), then chill again until they are as solid as possible. Insert a toothpick, dip in chocolate, shake off excess. Stick the other end of the toothpick in a potato or something. Repeat coverage as necessary. (Alternative to using toothpicks is a chocolate fork).