Those are great suggestions, both the onesie and pants elastic over the snuza.
It is funny that I am reading a lot about once the LOs start rolling, it has a tendency to alarm. But the funny thing is she is generally flat on her back when the seemingly 'real' alarms have gone off. Now saying that, I usually have her in a one piece pajama and let's face it night time diaper changes don't always result in perfectly fitting diapers.
Also, thanks for the battery link : )
Well, for a while I will have this snuza attached during all naps
I hope your little puff is dong well and of course the same for the ball. Best.