Reddit. Not a big fan of it anymore though. Lots of unfunny and irrelevant comment chains that just want karma. Full of circlejerk and meme posts and people can be quite rude on there. It's also a fairly liberal site as well. The default subreddits are the worst, I go on smaller subreddits.
A water bottle. In some places there's even a water fountain near the vending machine so forking over some cash for bottled water seems redundant and wasteful of money.