I was reading this blog post on Fifth in the Middle today and I really liked it! It was talking about a free website called Happy Class, which is an automatic seating chart maker! On the website you can mark which students can and cannot sit next to each other and any other learning preferences (sitting at the front of the room, for example). It then spits you out a fully formed seating plan for your classroom. In the free version you can only create one seating chart, but there is an option to pay and create unlimited charts.
I think it could be a super great thing to have. I know it’s always good to change up your seating arrangements, especially in primary school when kids are stuck in the one desk all the time and this website could help you try something different.