It seems like a lot of people are annoyed by the drops system (myself included), so wanted to give a quick guide on how I have it set up to auto-claim drops for those who may not know. Full disclosure: I'm not 100% sure if all steps have to be followed (with the exception of extension), but this is how I have it set up and it works for me. I'm using the Brave browser.
Go to the Chrome Extensions store and download "Twitch Inventory Claimer" and make sure it is turned on.
Set the refresh interval that you want (defaults to 1 minute). You can leave it at 1 minute (or increase to something like 5 to play it safe) which will refresh your page very often, or if you plan things out you can set it to 2/4 hours so that it only refreshes the one time, but a bit risky since if it refreshes even a minute early, it'll wait another 2/4 hours before claiming, which means you'll be that far behind the next one.