What
@Knikki says sounds more like what I would do for a full blown hypo, not for slowly heading towards hypo territory. In the latter case I may have half an apple, a cracker with cheese (5 gr carbs or so), some coated nuts, a couple of squares of chocolate or a handful of dorito's (yes, I freeze them in very small portions to prevent myself from eating the wholw bag). Mind, I choose one of those, not eat all of it!
When I'm very lucky I'm somewhere where I can lay my hands on a small piece of a fresh roll, soft on the inside, chewy on the outside with butter and cheese, or even a third of a fresh, still warm croissant. That only works when I'm with someone else, though, because someone has to eat the rest of the fresh roll/croissant before I eat the whole thing...
And should I eat too much of it, I inject for it after eating and a little less than I would normally have, to allow for my bg to go up a little.
Mind, when I'm dropping faster I definitely use faster acting stuff, the above is only for special cases!