I was an avid Science Olympiad participant in high school. My favorite event was Forensics, but I also did Technical Problem Solving, Protein Modeling, and Forestry, among others. Caltech Science Olympiad Club helps organize the Southern California Regional and State Science Olympiad competitions, so I jumped at the chance to get involved and give back.
There are two ways you can help out - you can write tests, or you can proctor the events at the actual competition. I've done both before. I helped create/write the Write It Do It and Forensics tests in the past. This year, I proctored the Hydrogeology event at Regionals. There are several regionals competitions in So Cal, but the one we help out with is held at Occidental College (about a 15 minute drive from Caltech). Recently, the state competition was moved to Caltech, which is super cool and convenient.
In addition to the warm fuzzy feeling you get from helping and seeing high schoolers and middle schoolers who are passionate about STEM, you also get free meals throughout the day (when you volunteer at the competitions) and a small gift after the state competition. The day starts off at 7 am with fresh donuts. Lunch is delivered to the room you are proctoring in. Finally, a group dinner is held at a local restaurant. We usually go to Garden Cafe after regionals, and we have free reign to order whatever we want.
If you're reading this and you participate in Science Olympiad, I hope this post inspires you to join the Science Olympiad Club at Caltech! :)