WooCommerce Bookings

I need to be able to offer a Resource as an optional Add-On to a Bookable Product.

For example, I rent Skis and Snowboards. I have 10 each of these.

A customer can also choose to rent a helmet at the same time, but I only have 8 of these. So if 5 Skis with Helmets, and 3 Snowboards with Helmets have been booked, the remaining Snowboards are not available.

This is not my real use case, but illustrates what I need.

Thanks