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!
Angle iron and flat stock for a simple 90 degree jig. Flip the angle iron either way for multiple options. The angle iron will let you clamp items together instead of trying to fumble around with a magnet.