Old hiking gear needed

I am taking a group of high school learners on a birding and nature conservation tour in the Northern Cape in two weeks time. They are all disadvantaged socioeconomic backgrounds. They have never gone on camps or hikes before, so they desperately need closed shoes, sleeping backs, jackets etc. Really does not have to be fancy or clean, even if it’s torn or stained. Here’s our Facebook page https://www.facebook.com/chsbirdclub/