Welcome, habibty! Yes, gifts are always in order and for everyone (sorry for the extra pressure on you.) Yes, I'd concur with perfume for his mother and perhaps sisters, a book about your region for his father and a scarf for his grandmother. Or some cute handbags or earrings or bracelets for the ladies and maybe cufflinks for dad. I think regional foods should be OK as long as you check ingredients - no pork, alcohol or gelatin. Or something from Pier One along the lines of scented oil in a nice container with those aroma sticks. Or really nice perfumed candles. Small designer wallets, mobile phone holders or little purses would be nice. Unfortunately there's not much you can't get in Doha.