I used to use Lawrys Season Salt on EVERYTHING.. It made my daughter sick.
I now use Mrs. Dash (love that stuff), McCormicks Garlic Powder, Salt and Pepper. I also have tried Gluten Free Pantrys Taco Seasoning and it was fine.
Hey ~ I found an eggless, soy-free mayo recipe at http://www.angelfire.com/mi/FAST/veggies.html
There's lots of yummy sounding recipes - scroll down till you find it!