Carol Broos is a now retired music teacher who was also a technology coordinator. Her website includes many of the projects and presentations that she uses/used when teaching or presenting. There are several good ideas here, but a fun one is a video that she uploaded of a live version of Incredibox!
Best Practices for Children's Choir is a podcast with Matthew Parker discussing his best practices when working with a children's choir. The discussion content ranges from choosing music to engaging in warm-ups. Matthew also shares his favorite octavos, composers/arrangers, warm-ups, and tips when choosing music. This is very useful information and a great resource to use when working with your elementary and/or middle school choir.
Podcast and synopsis of best practices for children's choir. I want to reference this if the world works my way and places me in an elementary school next year.