amazon.com has these Klipsch KHO-7 Outdoor Loudspeaker (Pair, White) for $139.99 at checkout.

• One pair of two-way indoor/outdoor speaker
• Equipped with 1" silk dome tweeter and 5.25" poly cone woofer

Walmart.com has outdoor movie screens starting from $8.84. Shipping is free on orders $35+

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AT&T has the JBL GO 2 Portable Bluetooth Waterproof Speaker for $19.98 with free shipping.

• $40 at amazon