One more month out of my shoes - inserts?

noexcuses1218

So I've started doing some running intervals again, finally, and am way overdue for some new shoes. Don't have the money yet, so I'd like to find a way to use the ones I've got (a pair of Asics that were really sweet back when they were new and don't ask me when that was).

Anyone had luck with inserts of any kind? As a temporary measure? Throwing ideas out; I'd love to run tomorrow but my feet aren't liking the shoes much. Knees and ankles seem fine.