FYI - the pinecones we used were all just picked off the ground, none were purchased.
We were able to accomplish this goal by mixing our glitter with Mod Podge "Luster." Once we had our Mod Podge mixture, we just painted it on to our pinecones.
The pinecones came out so pretty and shimmery - and no glitter residue.
We used three different colors of glitter: gold, glitz and champagne.