Flexible Seating for Young Writers

My young writers need your help!  I have been working hard this summer to help the students at my school learn to love writing in all forms and in all subjects. Students who are from high-poverty homes.  Students  for whom over 80% English is their second language.  Students who inspire with their stories, poems, and  essays.  One aspect of the Writer's Workshop I want to be sure I can provide is flexible seating.  Giving these students a place they feel confident, creative, and safe as writers is  of upmost importance.  Please help in providing us with exercise balls, yoga mats, lap desks, stools, and other spaces in which they can become authors.