Attach a screw cap to any bag you'd normally use a bag clip with. Two hole sizes for different pours. The large hole is wide enough for a table spoon to enter. Good for coffee bags, cereal bags and lots more.
I've provided options for the lids. I've made the screw caps taller so they are easier to grip.
Please feel free to suggest any improvements!
UPDATE: 2013-02-17. I've added pourcap.stl, a cap that allows me to pour ground coffee in a controlled manner into a reusable kcup.
UPDATE: 2013-12-03. I've added BagLidClip6 and BagLidClip8. They have a 0.6mm and 0.8mm gap respectively. The original has a 0.4mm gap.
UPDATE: 2020-01-17, I've added two funnel caps to help with pouring stuff into your bag. However, these are untested, I have not printed them. Let me know if they work! BagLidFunnelSmallCap.stl and BagLidFunnelCap.stl