I’m not sure how I feel about the name “stability ball.” I bought one, and my life is still an unpredictable mess! My core looks awesome, though.
Once again, I am a sad panda that the bag is not available 
The 5-lb kettlebell with workout DVD was good for a laugh at my gym (where our eensiest, baby kettlebell is 12lbs). While I suppose a 5-lb kettlebell could be useful in recovering from a severe injury, or perhaps a coma, I’m not quite sure how much value it has as a long-term fitness item. Great for toddlers, though!