For Christmas, mum received a "Diamond Dotz" kit to produce a picture of a gecko. She sat for hours, happily picking up little hemispheres, and sticking them to the self-adhesive background. Following the instructions, she's produced a very attractive picture, and thoroughly enjoyed herself doing it.
Included in the kit is a plastic funnel-tray that looks a lot like those used for pills. This allows you to pour some dotz (Yes, I know. It's Amercian. Nuff said.) back into their little packets once you've finished dotting.
To apply the plastic pieces, there is a tool with a hollow end. This is poked into some wax supplied for the purpose. It grabs the dot, assuming it's the right way up, but lets go once the dot is on the sticky picture surface.
This is all very neat, but there a lot of dotz left over, and I'm wondering how useful they would be as fake 16mm scale rivets? I've seen people use tiny "jewels" for this job. The dotz are 3mm in diameter and 1.3mm tall. They aren't hemispheres, but slightly faceted. Not enough to show under a coat of paint I suspect.
I might get the chance to try this theory out as it looks like there will be more of these kits arriving in the future, and that means more leftover dotz!