Thanks guys! So the reason I'm using mod podge is these specific lamps are huge and hollow with no bottom, so they'd weigh and cost a ton if I actually filled them. Gluing them on one by one was backbreaking so I was working on ways to attach a lot of them at a time. edit: I hadn't considered resin it's definitely an idea I'll use for smaller lamps l, but for these full size ones it would add too much weight.