I'm hungry reading Nandini's post. Bad, bad.
Richmond, I really like the Patak brand of spice mixtures. They come in a bottle. I use the Madras Hot Curry and Vindaloo when I run out of stuff or if I just want to saute some veggies quickly without fussing over the individual spices.
Gits makes dry mixes for dosa and idli and sambar, and again these come in very handy when you haven't prepared the batter beforehand and you have a craving for dosa. The sambar mix is actually better if you add a little bit to your own lentils. I know I must be missing something because the sambar mix has the missing ingredient.
As to frozen food, I just discovered frozen masala dosas with chutney that cook up really nicely in the microwave. But unfortunately, the store has stopped carrying it. But I found they had ras-malai and shrikhand. They were very good.
I also found a mattar paneer with rice made by a company called Amy's. It's not very spicy but my kids love it. And I found it at Target (of all places).
Good luck finding these in your area.
ps: when I was pregnant with my second baby, I couldn't stand any spicy food, whether it was Indian or Thai, Mexican or Italian. I couldn't even stand the spicy salad mixture my husband planted in the garden. He felt like he'd married a fake Indian. Thankfully, the baby was born and we again included spicy foods in our diet.