There were a couple of software packages that I mentioned at the March SIG.
Airy is a program that allows you to download videos from YouTube to save on your computer as MP4 files. It’s not free but you can sometimes find it at a reduced price. Airy Downloader
PixelSquid is a Photoshop plug-in that allows you to download high quality 3D images and place them in your files. It is currently totally free, even for commercial use. Check it out at: PixelSquid.com