Miscellaneous: It is better to take all your drinking water, colas, juices (pineapple, mango, orange, grape, etc) with you. In Karachi you can purchase an imported ice box for Rs 3000-5000, or rent an archaic metal box from various drink vendors. Nestle, Aquafina, or Kinley mineral water are the safest to take along.
Luggage and bags:
If you plan to stay at Kalri or Haleji lakes
Clothing/Shoes/Weather Gear: During summer its hot, so wear light clothes. During winter its warm in the daytime, and cold at night. Good walking shoes will suffice
Toiletries and Medical Supplies: Take all the medicines that you require.
Photo Equipment: Films, extra cartridge if digital, tripod
Camping/Beach/Outdoor Gear: If you plan to camp at the lakes, then take your camping stuff. Although guest houses/other accomodations are available.
Miscellaneous: Take all the water (mineral - Nestle) with you, food, etc
Light Clothes in summer because of hot seaton.
Take proper bathing clothes if you are planning to bath at Kalri (Kenjhar Lake). Wear Shoes during Bath as the beach contains small pointed /sharp stones.
Take vehicle tubes (used inside tyre tube) for supporting you during swimming.
Camping/Beach/Outdoor Gear: Huts are avaialble near beach, you may take mat for sitting.
Miscellaneous: Going to picnic from Karachi or nearby City you should take cooked food (any dish you like) with you becasue you may not find good food at Makli Graveyard or at Lake during lunch time. Take disposable plates. Take water cooler for drinking water or you may take Cold drinks in a Crate (or iron box). You can take ice from Thatta City.