If you are baking, you can subsitute rice flour for wheat flour. Cut down a bit on the sugar in the recipe, because rice flour is naturally sweet. I've seen the Japanese brand "Mochiko" in Doha. Things will bake a little browner than when using wheat flour, but it still tastes good, and is excellent for muffins.

"Amy's" is a US brand of canned soups/beans that is available at Megamart. They are often gluten-free.

A good snack for everyone would be a fruit smoothie with soymilk. I use the bagged frozen berries (blueberries or strawberries) and just blend with a box of vanilla soymilk.

Other quick snacks are apples and peanut butter, cornchips and salsa, or corn tortillas with refried beans.

If you look in the ethnic food sections, there are lots of interesting things. Japanese rice crackers are available in many different flavors. "Sunwhite" brand rice will cook up stickier than jasmine rice and is very good rolled in a ball, adding a bit of shoga (pickled ginger) and nori (dried, roasted seaweed).

For quick puddings, like the instant Jell-o variety, chocolate and banana flavor are really good blended with coconut milk available in cans next to the soymilk in Megamart. Other milk subsitutes don't set up as well.

PM me if you'd like me to dig up some simple recipes for muffins, brownies, and cookies.