The best product to have for a Standing Order is perhaps IAHBE - because a plenty of materials for different levels of readers. Very god are some nutrition shakes and food supplements if You use such things what be to advice. The problem which might occur is just the shipping especially to not so near addresses (f.e. Scandinavia or Baltic states). But from the stand point of financially challenged AFF it would be practical to buy with SO some everyday products (food; laundry).