Or you could use kraft paper, tracing an outline around each object.

Kraft paper is a cheap material for lining particle boards.

It is not as strong as kraft paper but has better printing qualities.

A four-foot-wide roll of kraft paper will hang permanently on the wall.

Kraft paper is produced on paper machines with moderate machine speeds.

This was built to service cargo ships which would arrive to be loaded with "Kraft" paper or bunker oil.

The longer fibres in the kraft paper allow for a lighter weight product with similar and often better mechanical properties than felt.

An alternative method does not require kraft paper.

Or you can purchase fiberglass batts with kraft paper glued to one side.

The base is most often particle- or fiberboards, then some layers of absorbent kraft paper.