For many years, we’ve made these individual trophies for the FIRST Lego League team, so that each member can have a memento of the real trophies we won. These cost about $5 each when ordering bricks from Bricklink. The site that originally hosted the build instructions has gone offline, so I’m reposting them here. If you know who I can credit, please let me know!
For the trophy plate, using a Cricut or 3D printer both work pretty well.