we do soy yogurt and I make my own
and I will honestly say that since getting our VitaMix I can totally understand eating even cheaper vegan meals--including juicing, making our own milks (we have a soy milk maker but it's cumbersome and doesn't make milk that we can really get into
)
without that, though . . . salad fixings and dressing, apples and/or whatever fruit is in season, I buy things like brown rice in bulk which makes a larger dent when I get it but is much cheaper over the long run
Flours also and we bake everything ourselves. There is some initial layout for pantry stuff, but you can also portion it out over a few weeks and then set a certain amount aside each week to buy things. I figure the staples, when bough properly and in bulk, can be kept to about $10 average of your budget, then you end up with replacing everything on different weeks (if you stay on top of it
)