So i made this last year.. I think i spent a total of $55.
the helmet is a base ball Helment that i had to demel off the bill and spray adhesive the fabric to.
the other pieces were foam sew together.
lazer cannon was a icetea plastic pitcher and the dog bowl and a tap it light that i rewired to make it turn on by the push of the button
I think if i redo it now it'll look better =\