Here is an instructable on how to make your own, homemade spinning top.
Step 1: Pieces
You will notice I use Lego dots on the bricks as measurement so just remember if I say something like 5x5 I mean 5 dots by 5 dots. So you will need...
one 8x8 flat piece (or a 3D piece)
two 6x6 flat pieces
one 4x4 flat piece
one 2x2 flat piece
one 1 dot (circular)
two 2x2 3D pieces