I've used either modge podge or my ATG gun. I have spray adhesive & I'm sure it would work, but I try to avoid the stuff because it is a pain to work with! And I would suggest: As adorable as all those shaped minis are, they are awful to work with. I did a rocking horse shaped one recently (had a bunch of cutouts in the middle as well as the outline) and I HATED cutting the papers and then trying to sand all the teeny tiny crevices later. I decided to do only basic shapes until I have my die cut machine to cut both the chipboard and the papers!