X-shaped rubber bands--like the ones the library uses to bundle books--as gift packaging! Would be great for fabric-wrapped Christmas presents. This link is to the MoMA store, I might try office supply sites for larger/cheaper options.
June Cut cardboard, paper to print on, paints, rubberbands of various widths -Rubber band printing is a fun and easy printmaking activity for kids. Here's how to make printed rubber band art plus ideas for extending the activity.
How to make a grip for your hook, pencil or straight tool using any size long knitting loom, rubber bands & hook. Instructions and Video Tutorial. Very EASY