ShareDrop is a free service that makes it easy to transfer files between devices without creating any kind of account. To use the service just go to ShareDrop.io in Chrome or Firefox (latest versions) on your laptop, desktop, or mobile device. Then do the same on the device to which you want to transfer your file. As long as both devices are on the same wireless network you can then drag a file into ShareDrop on one device and open it on the other.
Applications for Education
ShareDrop could be a good tool to use in an elementary school computer lab or a similar setting in which students don't have email addresses or Google Accounts for sharing work with their teachers. By using ShareDrop when students are ready to share their work with their teachers they can simply drag it into the browser on their laptops, desktops, or tablets.
H/T to LifeHacker.