We might all be stuck inside but that doesn't mean we shouldn't celebrate the special things. Here is a party hat to help make things a bit more festive without needing to run to the store.
The STL is a solid cone but setup your print for spiral vase mode with 0 bottom layers and it should print pretty quickly. Embellish it with stickers or make a quick spray from leftover skirt strands from other prints. Attach a chin strap with some glue or hair pin it on.
The author hasn't provided the model origin yet.