If you so desire, you can commemorate Avengers: Endgame with some snazzy sneakers.
First up is a pair of men’s Thanos sneakers from Adidas. They are in Thanos’ trademark purple with gold highlights reminiscent of his armor and a depiction of the infinity stones on the heel. The sneakers were designed by Jen Bartel, who also did an Adidas sneaker celebrating Captain Marvel (sold out). The limited edition AM4 sneakers (sizes 6-13) went on sale Friday, April 26 for $150 at the Footlocker stores in New York and Los Angeles and at footlocker.com
Captain Marvel 
Thanos 
As an alternative, you can also get men’s Thanos High Tops. They are available on Amazon for $39.99-$54.99 in sizes 8-11 D(M). Quantities are limited. The High Tops are signature purple with “Thanos” on the gold tongue and a circle with the Infinity Gauntlet and “Infinite Power” on the side. Purple Thanos Hightops are also available at SuperHeroStuff for $49.99 (which looks like it would be just below the $50 free shipping). They warn that sizes run small for the sneaker. Thanos Hightops got good reviews at Walmart.com, but when I checked the site listed them as unavailable.
Amazon also has a High Top for Endgame with logos for the characters in an Infinity Gauntlet display.
Another alternative is the slip-on Thanos Vans Skate shoe, currently available for $49.99 from Journeys.
If you just want to lounge around basking in your infinite power, you can get some Infinity Gauntlet slippers on Amazon for $21.99, and maybe get a Thanos robe to go with them ($47.50+shipping)
Of course, there are a variety of other Marvel sneaker and slipper options available for a range of characters.
My personal favorite would be the horned Loki slippers from Think Geek ($29.99)
