For stakeholders or creators, claim one by one rewards is indeed waste your time. So, for now you can claim all your rewards at once with 2 option (the ways that I already know)
1. With Steemworld.org
Go to steemworld.org/@yoursteemitusername
For example is mine: https://steemworld.org/@anggreklestari
Then, in the left side, click "BALANCES" section. After that, click "CLAIM ALL REWARDS" section in the right side. You have to enter your posting key.
2. Steemzzang.com
If you are Steemzzang user, this tribe will be great choice because very simple. You don't have to enter your posting key again, if you have been saved your password on your browser.
Got to your wallet on Steemzzang, this is for example: https://www.steemzzang.com/@anggreklestari/transfers
Then, you just have to click "ALL IN ONE CLAIM"
What's your fav way to claim all rewards at once?