Below is a brief instruction on how to make a spider from a bottle of mineral water. You need to cut the bottom of the bottle and prepare the holes with a hole punch. Let the children do the rest.
1 plastic bottle of any capacity and color (small or large spider),
4 thin, hairy wires (chenille) for spider legs,
1 wire of a different color for head,
2 eye beads (with a large hole),
permanent marker for painting spider pupils.