I usually do experiences for my husband's birthday. He's an engineer so we've done tours of different kinds of plants (steam plant, steel, etc). There's a rent an electric boat place that he likes that's pretty cheap so we've done that a few times. Is there a place in your town he's wanted to go or something he's wanted to do? $500 can get him a great experience! (you could probably also pay a lot less too)
boil up some mini-pasta shells, once cooked toss in a pan with some marinated artichokes, chopped tomato, red onion, a little marinara if you've got it (if not throw in some tomato paste with a lil veggie stock), and this is key Treeline cashew mozzarella that you've shredded.
creeeeeamy, tangy, easy peasy lemon squeezy
Robert Palmer
I've fallen into a Robert Palmer rabbit hole. (Yes, Addicted to Love, Robert Palmer.) Take a listen though to "Every Kind of People" or "Johnny and Mary" and just groove to a sexy sultry voice of an Englishman pre-Nagel women videos.
King Arthur Gluten-free Pizza Flour
So easy to mix I don't even bother with a mixer, just a good ol' wooden spoon. Takes a while for the dough to rise and be ready but it's really great once you've got all your fun toppings going. Best gluten-free pizza dough I've found and I've eaten a lot of cardboard nonsense doughs trying to find something resembling "pizza".