How do you make a nesting box?

my parakeet laid like four eggs and she's been sitting on them in the corner of the cage all week, should i make a nesting box for her? and with what?
Answers:
Well unless you have a male parakeet, the eggs won't hatch..if you have a male parakeet, then just leave things be as they are, can't move them now..if you've no male you can remove the eggs anytime...you can buy nests already made @ any pet store, PetSmart tho %26 ours liked them just fine..TC %26 Peace :)

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is she has been sitting in the corner brooding them for a week (and it is on a grate) it is too late- they will be cold and dead.

If she is by herself, you do not want to encourage laying eggs- females can easily become calcium depleted and die from it.

If you have a mate and want her to lay and raise eggs, you can construct a wooden nest box or buy one (which really isn't that much more expensive).

Here is an example:

http://www.windycityparrot.com/merchant2...