Re-use plastic bottle tops to tightly seal food bags. Cut off wide-mouth plastic bottle top just at crest. save the cap. slip over bag opening. top toward the open end. Fold bag over bottle mouth. cap with re-used bottle top. easy to seal and pour!
Made from blank canvases and metal repair tape. DIY: cut metal repair tape and adhere in geometric patterns to the canvases. The silver material stands out against the blue walls. And lots of other blank wall ideas on this link.