Goal and options: How to cut open the top of a helium bottle?
output answer: Find a helium bottle online then empty the bottle completely. Cut open the tip and open the tube also from the side. The dimensions of the hole depend on your lateral opening on your stove.

Goal and options: What materials are needed to make a Spiderman mask/
output answer: 1. Cardboard 2. Red stretchable cloth (optional) 3. fishnet 4. glue 5. small magnet x4 6. evo foam 7. black marker 8. hot glue gun

Goal and options: How to chill pudding after heating.
output answer:
After adding all ingredients to a bowl, cover the bowl with saran wrap and place in fridge to chill.