Cusco, Perú Volunteer abroad

I'm going to a volunteer trip in Cusco, Peru and want to bring donations for the clinics and schools I will be volunteering with. There are low income clinics in Cusco where most of the time there is no money to buy a simple box of gloves, pain relief pills or over the counter basic medicines. In adittion, poor schools in Cusco typically share 2 pencils between a group of 20 kids and they often don't have the materials they need in order to have successful learning lessons. Therefore, I want to provide these people at least a little bit of what we have as a necessity, but it is a luxury for them to have it.