This is always the challenge I use, and it's pretty good.

Each of you will choose a challenge from this list. We'll compete in all 3 at the same time.

If you win a challenge, you get 2 points, and if you get second, you get 1 point. Third place in a challenge gets no points.

Once we're done with all 3 challenges, we'll see who has the most points, and they'll win immunity.

Here's the list:

-Sliding puzzle: You'll each have a sliding puzzle, and you'll have to send me a screenshot when it's solved. You're trying to get the least moves.
If you're unsure about screenshots, then I can help you if we're online at the same time, in either finding a way to screenshot or sending you a screenshot at a time and asking for your move (which sounds dull as fuck so please find a way to screenshot but I understand that not everyone can)

-Poll: You guys will have to get as many votes as you can in a poll.

-UGHHHHHH: You each get a forum and have to have the most posts in that forum during a set period of time. Anyone can post in the forum!

-Voting Chains: You'll have to post a chain with the names of people from ONE season of survivor, with the chain being that one voted for the other.
example:
Sekou votes for Sundra
Sundra votes for Cao Boi
Cao Boi votes for Cecilia
and so on.
You get 1 point for every link, +2 points if you get the entire cast and +3 points if you end it with the winner. Jury votes do count. You can only use each person's name one time.
You will only send me one chain, but if you manage to score better, you can send me a new one.

-Plus and minus: You'll all have 10 points, and you'll want to get the highest score you can without going over 20. To change your score, people will post +1 or -1 next to your username, trended. 20 is the best score you can get, but as soon as you get 21 you're basically out of the challenge. This will go until the blog I post expires

-The hunt: I'll post some specifications for a page on tengaged. You'll have to send me as many links as you can that fit those specifications. If you want to try to be technical or a smart-ass about something, GO AHEAD :)

-Candy Scavenger: I'll post some comments on old blogs, and you'll have to hunt for them and find as many of them as you can. This one takes a lot of prep so it would start later than the other ones.

All these challenges will last 24 hours