How to replace the dumbbells
Some of the dumbbell routines actually work quite well without weights at all. In this instance you will just move the arms without any weights. This will make the workouts easier but still effective.
Another great way to replace the dumbbells is to get different size water bottles - they will work surprisingly well since Warrior 20XX workouts are more strength endurance than pure strength and as a result the weights don't need to be heavy.
Otherwise, we highly recommend getting an adjustable dumbbell set. You can find them from all fitness stores worldwide and even in supermarkets if they have a fitness section. They are also very inexpensive and cost around $20-40.