Since adopting a dairy-free, wheat-free diet a couple of weeks ago (out of necessity, not desire) I'm finding it much harder to get the amount of fibre in my diet that I used to get quite easily. No wheat, in combination with no raw fruits or vegetables has really made Tara a dull (and rather uncomfortable) girl.
In walks psyllium. Psyllium husks are a wonderful source of natural fibre (and wheat-free). I've been adding it to my applesauce and cereal, and it's a great filler. It's not even difficult to find - just check the bulk store or the organics section of your supermarket. Easy-peasy. It has 10 calories per teaspoon, while packing 2g of fibre into that teensy little bit.