On this project, the materials used are recycled materials like small milk cartons and old plastic food containers. See video and written instructions here==> | Make Your Own DIY Cement Planter | http://gwyl.io/make-diy-cement-planter/
Recycle plastic baby food containers to use for snacks for the kids. Buy in bulk and then put in containers. Cheaper than buying the individual snacks. Kids can get snack themselves while you still have portion control.