You can get this charging dock for Nintendo Switch Joy-Cons on sale for $16.99 right now (reg. $19.99). Instead of only being able to power two controllers on the sides of your console, this charging station allows you to power up to four at once. Just slide each Joy-Con onto its designated place and watch LED indicator lights change from red (charging) to green (fully charged) in as little as two hours. It includes a 3-foot USB-C cable to power the dock, and it won't take up much space by your entertainment system or gaming desk. It also has protections against overcurrent, overheating, overvoltage, and short-circuiting.
You can get this charging dock for Nintendo Switch Joy-Cons on sale for $16.99 right now (reg. $19.99), though prices can change at any time.