Even if you don’t get a free sample of asteroid dust from NASA, you can still get a stamp.
Some results reported here:
I was looking at my meteorites just now to find the one close to that sample mass to visualize the amount, and one that I recently rephotographed is 122 grams. On the negative side it is much less pristine than the Bennu sample, but on the positive side it looks much more like a horse’s head. (Also I got my sample a hundred million times cheaper, which is a plus.)
I thought it was a frog when I first looked at it.