Final answer:
You can make a rigid splint at home using stiff, clear, plastic sheets, fibers for textiles with stiff cardboard or rulers, or materials with applications similar to natural rubber.
Step-by-step explanation:
To make a rigid splint around the home, you could utilize stiff, clear, plastic sheets, which can provide the necessary rigidity to support an injured limb. You might also find fibers for textiles, such as thick denim or canvas, in combination with something like a stiff cardboard or a ruler to enhance stability. Although not typical, materials like Elmer's glue can be used in a Silly Putty Demo to demonstrate the concept of creating molds and supports for splinting, or in small amounts to help secure the splint in place. Objects found with applications similar to natural rubber, like certain plastics or tubing, could also be repurposed as a component of a homemade splint.