Don't have the time 3D model what you want? Don't worry, there are 1000's of free 3D models just begging you to print them! Before you spend hundreds of hours modeling an entire Iron-man suit for your next cosplay adventure, check out one of these sites and you might just find what you are looking for.
Here are my Top 5 favorite depositories of free 3D Models ready to be 3D printed:
https://www.thingiverse.com/
https://www.youmagine.com/
https://pinshape.com/
https://www.myminifactory.com/
https://cults3d.com/
The great thing about these websites are, they are populated by people like you. So if you can't find what you are looking why not share your 3D models with the community to pay it forward. You might make someones day with you own creation.