Wasteland Workshop Shirt
This doesn't have anything with Wasteland Workshop's content but if you wish to celebrate the DLC's release with a nifty t-shirt, you can do that right now.
Bethesda is currently taking orders for an Wasteland Workshop shirt and it will ship out right now if you want it. It'll set you back $20 but it features the image Bethesda is using to promote the DLC.
These shirts sometimes go out of stock so if you want one ASAP, now would be a great time to put in an order for one.