I told you previously about the Harvest Acorns and thought we would be done with this subject, but another product has appeared at Dollar Tree:
I found this pack on the same display as the foam acorns, but from a different range. The acorns are red, orange and yellow clear plastic, mixed in the same pack. Some have bubbles inside, or casting lines on the exterior. 30mm from tip to tip.
These have almost a glowing property, and would work well as fantasy or sci-fi vegetation, sci-fi tech, or even mounted on flight stands as alien starships or space mines.