This small lego trophy is what I make for my kids each year that they win a trophy (which, so far, is every year). It costs less than $5 in pieces on Bricklink (especially if you aren’t concerned with the color of the base).
You can get trophy plates printed locally for cheap as well, or make a label with your printer or cricut. I’ve made one with my 3D printer as well.
Build instructions can be downloaded here: Trophy Building Instructions
If you know who created this model, please let me know. I haven’t been able to find it online, and want to cite my sources.