Amazon has the Amazon Basics PU Composite Basketball for $19 with free shipping. List price: $24. Official size 7 basketball; measures 29.5 inches (75 cm) in circumference.
Has excellent Amazon Reviews.
Amazon has the Barnett Pro Diablo Slingshot w/ 3-Piece Stabilizer (Grey/Black, ?17005) for $15 with free shipping on $25+ or with Prime. Features sleek and efficient three-piece stabilizer for steady firing, includes sight system, wrist brace is detachable, adjustable sight system, soft-touch grip, includes shooting guide and practice ammo., #1 Best Seller in Hunting & Shooting Slingshots.
Has good Amazon Reviews.