I'd argue the best merch is useful merch. This Golden Snitch clock is something your gift recipient will likely use every day and is an eye-catching addition to any display or bedside table. 

I understand this is intended for children, but I would not be opposed to owning this myself. This Hedwig toy features more than 15 sounds and movements to (kind of) bring this beloved companion to life.

These cards feature really cool illustrations of Harry Potter characters including Harry, Hermione, Dumbledore and Voldemort. You can choose a deck featuring one of four colors: red for Gryffindor, green for Slytherin, blue for Ravenclaw or yellow for Hufflepuff. There's also an option to get one deck of each color for $40.

Here's another fun game option, but with a tech twist. Use Harry's wand to draw clues in the air, which other players can view via the Pictionary Air app on their devices. 

We all need a little motivation now and then, and these wooden quote signs are among my personal favorites. One reads, "Help will always be given at Hogwarts to those who ask for it," and another says, "Don't let the Muggles get you down." You can hang these 5x7 signs on the wall, or set them on a tabletop. 

I'm adding another clock to this list because I just got this one and I'm obsessed. This is not only an elegant timepiece, but it also has an hourglass on the back that makes it infinitely cooler.

If you're craving the delicious Butterbeer from Universal Studios or Harry Potter New York but are nowhere near either of those locations, or don't feel like making your own, this is a pretty good replacement. It's a bit on the sweeter side but has that same creamy butterscotch flavor (and is also nonalcoholic). You can get a pack of four 12-ounce bottles for $14, or a pack of 12 16-ounce cans for $50. 

Last but not least, no wizard's collection is complete without a wand. This option lights up, which makes up -- at least in part -- for the harsh reality that there's little else a wand can do in the Muggle world. Unless we summon our imagination...