Does he already use a bowl? Some guys prefer to build a lather on their face. If he likes bowl lathering then these are popular options:

https://www.amazon.com/TRBOWL2-Timeless-Razors-Shaving-Bowl/dp/B0792F78J3/

https://www.amazon.com/dp/B07TC7S79Z/

That second one is not a joke, apparently it works very well.

This one will keep the lather warm, but I think many end up as shelf ornaments:

https://www.amazon.com/QSHAVE-Shaving-Scuttle-Mug-Handmade/dp/B0787SW47L