Ha that's a crazy amount. We spent 1 month in Oman recently. We took x2 medium suitcases, x2 hand luggage. For myself, dh, ds's age 4 and 2
For the kids
X2 chinos
X3 shorts
X3 long sleeved shirts
X2 jumpers/ cardigans
X7 t shirts
X1 sandals
X1 moccasins
X7 pants and socks
X2 swim shorts
On plane wore jeans, long sleeve top, jumper and blazer. Smart boots
Adults we took approx a weeks worth of clothes also. For me that was a few dresses for various occasions, few trousers, tops, cover up things etc. dh basically few chinos, 5 shirts for work, few leisure tops, etc.
The handluggage included x2 laptops as working, iPad and various odd bits but basically just large handbag for me that fitted laptop, and large should bag for dh. Spare pants and Tshirt for boys and few toiletries, passports etc... Few tiny books. Never really take entertainment on flights for them. They read in flight magazines, watch films, eat, sleep, and explore airports.