Printed Mr-Cal's 1/2" Impact Driver Socket Set Tray and found there may be multiple variants of Harbor Freight Deep Impact Driver Sockets in the market. This design is the same style as source, including the neodymium magnets, but is designed to accommodate the larger socket set that I have.

If Mr-Cal's does not fit yours, these might be worth a shot.

Recommendation for future improvement is to thicken the base to accommodate larger, more powerful magnets. I can slightly feel the attraction, but it would be more satisfying if it could be held at an angle without the sockets falling out.

Thank you, Mr-Cal, for sharing your design.