A crown taken from the movie Alice in wonderland. The diamond is taken from https://www.thingiverse.com/thing:2444870 . You can easily print the parts with PLA or PETG. After (carefully) sanding, priming and painting you can stick the diamonds with hot glue on the crown.
If you also need a scepter from the queen of hearts you will find one here: https://www.thingiverse.com/thing:3071632
crown.stl | 33.3MB | |
diamond_crown_12.stl | 76.5KB |