Yes, you can get decorations based on a classic scooter. The pick of the pair is obviously what you see above, a set of four stainless steel scooter-shaped decorations, which are 1.2mm thick and sold in a branded Vespa box. You can pick up those for €47.90.
Or for a little less, there is Vespa box of branded baubles, which feature both a scooter illustration and the Vespa logo in red. You can get those for €35.21.