Backlog grooming and planning meetings used to be not so liked by our team members. Last year, we started using planning poker for estimations and started using planning poker cards. This made our not so fun planning meetings fun. During our last backlog grooming session, one of our colleague started using Android app for planning poker. Seeing him, others in our team (including me) downloaded iPhone and Android apps for planning poker. This now makes our planning meetings even more fun. Everyone waits to showcase their estimates with smartphones now.
Some of the apps for iPhone:
There are many apps for Android as well.
Feel free to leave comments here if you have any other creative ways to make Agile meetings more fun.