A Giveaway is an organization on Animal Crossing Community that gives away items free of charge for Animal Crossing games.
There are many different giveaways on Animal Crossing Community. You can find them by going animalcrossingcommunity.com to the left of your screen and under "ACC Forums" and click "Services" you will be able to browse through all of the giveaways. Make sure to read the first post (on page 1) of all giveaways you order from to understand the rules and terms of ordering, all giveaways are different and may have unique rules