Ravpower has a deal where you buy the USB-C 30w charger for $24.99 and you get the 3ft lightning to USB-C cable for free. I actually had a $3 coupon to clip on the charger and a $1 coupon to clip on the cable, so both were $22 with tax.
Charger:
https://www.amazon.com/dp/B07T7M2799
Add cable:
https://www.amazon.com/dp/B07QV8MRVD
Coupon code: RPPC120R