"As for honoring Monty, we will do that in our own way. In lieu of flowers or gifts, we ask that you simply do something creative. Use your imagination to make the world a better place in any way that you can. If you know Monty like we do, then you know he would certainly be doing that if he were able to."
For those who don't know Monty Oum, he worked at RoosterTeeth on a lot of things including Red vs Blue.
Here's a Kotaku article with a bit more info. A few days ago Monty was hospitalized due to a severe allergic reaction. Fans raised over $180,000 for his medical care over the weekend.
RoosterTeeth held a podcast dedicated to Monty. The final 3 minutes are a tribute video of both Monty and his work.