https://www.gamespot.com/articles/bungie-offering-destiny-2-freebie-for-supporting-h/1100-6453003/

With the effects of Hurricane Harvey continuing to be felt, Bungie has announced a campaign to support relief efforts. In return for helping the cause, you can get your hands on a physical item and a special Destiny 2 customization option.

Bungie notes that orders will be shipped in the order that they're purchased, and that as of August 29, it has 15,000 in stock. More will be produced so they can ship out in mid-October. If you'd prefer to donate directly to Direct Relief, you can do so here.