Amazon has Add-on Item: Hyperkin "Pupper" Rechargeable Controller Grip Attachment for Nintendo Switch Joy-Con on sale for $9.78. Shipping is free w/ orders $25+.
- Rechargeable internal battery that charges Joy-Con controllers while you play
- Curved grip for comfortable hold, secure and easy to slide in rails for Joy-Cons
- Battery status and player number indicator light
- 3 decorative puppy smile stickers included
- USB Type-C compatible