8GadgetPack is a free application which enables users to run some original desktop gadgets in Windows 8, 8.1 and 10.
A simple browser displays 50+ gadgets, with thumbnails and basic descriptions. Scan the list and you'll find CPU, drive and network meters, process monitors, calendar and reminder apps, email checkers, clocks, puzzles, unit and currency converters, an internet radio tool, assorted weather checkers and more.
Double-clicking anything that looks interesting will add it to your desktop, and you can drag it around, work with the gadget, set opacity, tweak its options as required.
A "Tools" dialog provides options to manage everything you install. There are buttons to make gadgets larger or smaller, run them at Windows startup (or not), organise them in a sidebar, add a new gadget, reset your gadgets to their default settings (handy for troubleshooting), or uninstall the package to get rid of everything.