Grappling hook
thingiverse
Just an everyday thing that everyone needs. Print with the hooks up, increasing the number of walls makes it stronger. Let me know if I should remove the hook support. With two perimeters at a 0.3 layer height, one hook can hold 25 pounds, which is 12.5 pounds per perimeter. So, if you do four, you'll have 50 pounds on a hook. As for the loop, I don't know because I've reinforced it and don't have time to print one out. If you do print one, just tie a string around the loop then attach some weights and comment. Post-Printing: If you want to, I added a small hole for 4.5mm air lift BBs. You can put them in there, which will make it heavier.
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