These might not work but you can still try
Save 20% off for Cyber Monday
Triwa.com: Cyber Monday deals! Save 20% off your order
Save 20% off plus free gift and free shipping
Triwa.com: Enter this coupon code at checkout to get 20% off your purchase plus free gift and free shipping
Save 20% off order
TRIWA.com: Black Friday deals with a 20% discount.