One thing: "durable" stuff might be easier for people to get than stuff that constantly runs out, like diapers. One used toy can go a long time, but diapers are gone in a flash.
So in terms of what is most needed, I'd check with the organizers; hopefully they have a really good idea of how your money will be most powerfully helpful for THEIR "target audience."
Especially in a food kitchen setup, their clients probably have some toys, etc. But they don't have any money to buy diapers and formula. Also, their kids CAN go without toys, or play with only 1 toy. But they can't go without diapers or formula.
My church sponsors an orphanage in the Dominican Republic, and we send food down because believe it or not, it's cheaper (and safer, in terms of theft) than sending money. Buying food is expensive.
But people often want to fill up the barrel with clothes. The thing is, the clothes will last 2-3 years, sometimes more. The food lasts 1 meal.