Hello Rawbee,
It’s very good to know that you are going to meet your families & friends after a long time. As you mentioned, you haven't send any gifts to your families beside mom and dad. Well then there are some of my personal suggestions for you.
Grand Pa: 77 -Warm Cotton Jacket (choose gray or tan color -TJ Max) –winter on way!
Dad (45-50) -Watch~Seiko/Citizen/Casio (JC Penny or Sears) & French Cap (TJ Max)
Mom - Woman Dress set (JC Penny) & Purse (JC Penny/TJ Max)
Dai (32-38) - Tie (2x) & Sunglass (Oakley or Ray-ban - from sunglass hut or Macy)
Bhauju - Ladies Purse (TJ Max) & Sandal (JC Penny/Famous foot ware/Payless)
Bhenaju(32-38)- Warm Cardigan Sweater(Gray with Strip) & Formal Shirt (TJ Max)
Didi - Nice Cutie Ladies watch (JC Penny/Sears) and Perfume (TJ/Macy’s)
Kaka (35-40) - Plain Polos & Shirt (TJ Max/Gap)
Kaki - Ladies Purse (JC Penny/TJ Max) + Lipstick (x2) from (Wal-Mart)
1 fuchi 10 yrs - Tees from JC Penny or Aeropostale or shoe (Payless)
3 Fucha haru 12-15 yrs – Get Tees (you can guess the size by their age), pants not Reco!
Frens - I suggest buying the same for all. Either go with Cigarette box/Zippo (if they smoke) OR Jump Drives (idle for professionals)-(Sandisk4gb=$20 or less)
I would also suggest you to take 10-15 pcs of Lipstick light (10) & dark (5) color mixed, some eyeliners, few mascara & nail polish; choose brand names as L’Oreal, Mabelline, New York or Revlon (Wal-Mart – always less for cosmetics). And, if possible get one blood pressure measuring device from Wal-Mart, good for family.
And where to SHOP these all: As per my experience, I went to "TJ MAX", "JC Penny" and “GAP†for clothing. TJ Max has decent branded ladies purses, perfumes, shirts & polos whereas JC Penny has woman dresses, purses and sandals.
Good Luck & have a wonderful shopping.