I spray painted a box of crayons to create the "brass bullets", then I just super glued them onto a strip of Velcro. And that’s it!
You could also lace black elastic between the crayons to achieve the effect of the holsters.
My cost was less than $10.00 and took less than 4 hours to make!
30 Minute Black Widow Belt
To make Black Widow's belt, I bought a pack of wood discs at Hobby Lobby for $2.00 and a belt at Goodwill for $0.99. I spray painted the wooden discs black and super-glued them onto the belt. Then I cut out circular trim from 2 mm craft foam, painted them gold and glued those pieces onto the discs.
The red X was made by applying masking tape (in the shape of an X) to one of the discs before spray painting them black.
Once that paint had dried, I removed the tape and filled the X shape in with red acrylic paint.