Man alive, you're going to thank us for this one.  We went and took a red, 100% cotton t-shirt adorned with a massive Flash symbol and packaged it in a durable, collectible, reusable tin!  The round, tin gift container measures 6.5' across, 3.5" high and nearly 4.5" deep, featuring a lid adorned with the Flash circle and bolt symbol and a Flash logo printed on both the front and back of the tin proper. 

This Flash T-Shirt in a freakin' cool-@$$ tin is absolutely the perfect gift for fans of...the Flash, maybe.  Or Doctor Lightning.  Poor guy doesn't have any licensed product, so maybe mention you had it custom made just for him.  Probably want to put masking tape over the Flash logo, though.  Maybe put the Doctor's logo on there with some crayon or something.  Just an idea.