At my old job, my boss always made this suggestion to folks who asked about portable fencing.
Keep in mind - this is NOT predator proof.
I made several of these and have been using them every single day - for one thing or another.
Use PVC pipe (there are different sizes, so pick the one you think will be strong enough for you)
Use a PVC cutter and cut 4 equal lengths (to make it square - but you can make it any shape that suits your needs)
Using PVC 'corners" push it all together to make a frame.
Now use chicken wire, or poultry cloth and wire ties (zip ties) to make a screened in panel.
When we were moving, I made 12 of these - 4' x 5'.
I zip tie them together to get an "accordian" effect. I can move them anywhere -
Oh, and you can also spray paint them green (or whatever) to blend in with your yard...
Proud Mom of 1 New Hampshire Red, 1 Buff Orpington, 1 White Leghorn, 2 Black Sex-Links, 2 Rhode Island Reds, 2 Easter Eggers, & 3 Barred Rocks, 1 ottb, 1 fox trotter, 1 red roan filly, 2 dogs, 11 cats...
Proud Mom of 1 New Hampshire Red, 1 Buff Orpington, 1 White Leghorn, 2 Black Sex-Links, 2 Rhode Island Reds, 2 Easter Eggers, & 3 Barred Rocks, 1 ottb, 1 fox trotter, 1 red roan filly, 2 dogs, 11 cats...
