Amazon has the AmazonBasics 100-Foot Outdoor Extension Cord (KT101) for $20 with free shipping on $25+ or with Prime. It features a vinyl covering that protects against moisture, abrasion, and direct sunlight.
Has excellent Amazon Reviews.
Amazon has the JackyLED 14-Outlet Charging Station (JK146-4SB-4) for $29.99 - $7.50 off with coupon F45KBIYU = $22.49 with free shipping. It features 14 3-prong power outlets, four USB charging ports, and a 6.5-foot retractable cord.
Has good Amazon Reviews.