Amazon has the Hyperkin Pupper Rechargeable Grip for Nintendo Switch Joy-Con for $12 with free shipping on $25+ or with Prime. List price: $20. It has an ergonomic design, which provides a curved grip for a more comfortable hold. It features a battery status and player number indicator light, 3 decorative puppy smile stickers included, USB type-C compatible.
Walmart has the Mario + Rabbids Kingdom Battle for Switch (887256028299) for $30 with free in-store pickup or $5.99 shipping to home. List price: $42. Designed exclusively for the Nintendo Switch system, playable anywhere, anytime, with anyone.