Basic parts needed:
1 – 10 foot long piece of 3/4? PVC pipe
1 – 45 degree 3/4? PVC fitting
1 – 3/4″ PVC T fitting
2 – 3/4″ PVC end caps
1 – 2 foot long piece of concrete rebar
You will also need parts to hang the flag such as a couple eye bolts, carabiners, shower hooks, or whatever depending on the method you choose.
Home Depot has their own idea on making a flag pole and custom flag which would be great for group camping. Check it out here.