Autodesk Fusion 360
This program is a great easy to learn resource with a large array of online tutorials to help you in designing your very own 3D models to print.
This program allows you to import 3D files you may have found or created and combine them with other 3D files or simply sculpt the file you imported.
Tinkercad is a free, easy-to-use web app that equips the next generation of designers and engineers with the foundational skills for innovation: 3D design, electronics, and coding! It requires setting up a free account. --Taken from publisher
Similar to Thingiverse, MyMiniFactory has a wide array of 3D models, both free and paid, to meet your creative needs.
NASA 3D Resources
"...a growing collection of 3D models, textures, and images from inside NASA. All of these resources are free to download and use" (hosting 290+ models)
Onshape | Product Development Platform
"Easy to use website that allows for designing your own models through a cloud and browser-based application that is free to students."
Original Prusa i3 MK3S+
This webpage contains information and specifications about the printer the library currently uses to perform 3D Prints.
Smithsonian Digitalization 3D
Ever wanted to see an artifact from the Smithsonian or possibly even print it? The Smithsonian digitization website has over 100 files that allow you to see and print many of their artifacts in a 3D format.
Thingiverse - Digital Designs for Physical Objects
One of the internet's largest resources for free 3D printable files.
iPad app - Blokify is 3D modeling software that enables children to to create toys they can play with virtually or physically via 3D printing. Download Blokify from the iOS App Store -- description taken from website