This year for Lent, I gave up sleep.
And no I haven't pulled a 40 day all nighter or anything. Rather, I have been getting up a bit earlier each morning and calling a friend of mine who also needs to get up in the morning. We share about our previous day and then we pray for each other for that day. It hasn't always been easy. In fact some days it's been downright tough or didn't happen at all (like the weekends), but for the most part, we've been pretty good about it.
What I have really enjoyed the most about it is the fact that this was a friend that I have known for several years, but wasn't really close with or didn't know her that well. I took a chance and asked if she wanted to do something like this and she said yes and so we decided to try this experiment for Lent. I have really gotten to know her better over this time which has been really great.
We haven't talked about continuing this on past Easter, but I have enjoyed it so much that I would like to keep doing it. We'll see.
I encourage you to try this as well. Perhaps there is someone that you want to get to know better but you can't really take the time to always meet with them for lunch or spend time with them face to face. You can just call each other in the morning or at a set time and encourage one another. Maybe you want someone to keep you accountable to working out, or reading your Bible, or getting up early, or going to bed early. THis is a great way to start an accountability partnership with someone and it doesn't take up much time at all (although I will say that we do tend to talk for a bit before we get to praying :)