Here this may give you an idea of what it looks like:
The piece of foam core is used to reflect light because I am not using the other half. I might also suggest if you choose to build a bigger box to expand in the future, do all the wiring for the sockets, then just add the bulbs you need for now, and use something to divide the box (like the foam core).
As a side note. I'm not sure where you are from, but I found some useful things for alt printing at WalMart. Such as, a digital timer ($5), 100ml measuring glass ($2), and a digital themometor ($10). Take a look in the cooking isles.