Seems like a good option for a joycon grip, charging and better shoulder buttons.
Get a grip on your gaming!
Turn your Joy-Con™ controllers into a full-sized controller with the PDP Gaming Joy-Con Charging Grip Plus for Nintendo Switch.
Joy-Con controllers dying in the middle of your game? Plug in the included USB cable to charge while you play! Check the charging progress of the Joy-Cons using the individual charging indicators. The comfortable and ergonomic design of the officially licensed Joy-Con Charging Grip Plus
Features:
Comfortable, ergonomic grips turn the Joy-Con controllers into a full-sized controller
Included 5-foot, type-C USB cable lets you continue playing as you charge
Enhanced trigger extensions provide quicker reaction times
Individual charging indicators let you know the charge status of each Joy-Con
Thanks op. 25 bucks, you could put it towards a pro controller. 😃