The Beast in kettlebell circles is the 48kg or 106lb bell. There are quite a few challenges that have popped up with its usage.
100 single arm swings in under 5 min.
One arm press
One pull up
One Turkish Get Up.
Once you do one of them you get to name it. Outside of the swings, it may be awhile before the others are approached.
It's going to be a reminder of keep getting stronger. Keep pushing your boundaries.