We purchased a weighted lap pad from the company Fun and Function (size med/large).
And the slipcover for it:
A huge thumbs up!! The quality is wonderful, and it helps Zavier remain focused and calm. We see a lot less ADD-type mannerisms when he uses it (Zavier is very low energy, and I wouldn't describe him as hyper, just has issues with focus/attention).
Everyone in the family noticed the improvement. We're looking forward to using it in therapy and school.