What should I get him for our 1 month anniversary?

My boyfriend is super picky and loves brand name and basically only brand name. I was thinking about getting him jewelry, he loves the brands: Vivenne Westwood, Chrome Hearts, and Monarchy but I dont have that much money this month I was thinking about spending maybe under $40 can someone please help me out?? Im so lost, By the way, our 1 month anniversary was yesterday and he got me a Tiffany's necklace. I'd feel bad if I got him something cheap.