Sorry, They are actually looking for 7 for parking instructions and other wayfinding. that is why I am hesitant to create one because I am not the best wood worker and while one might be good, making 7 I would worry I can't get them to all look close enough to pass as professional
Okay, let's use
your head a little bit, here.
You figure out how tall the sign is to be and make 24pcs for legs from either a 2" x 4" or 2" x 3" Make sure you add an extra 3 or 4 inches for the bottom feet. Decide how wide you want it and cut 24pcs to fit in-between the upright legs. So far, so good ?? Now, whatever you finished size is, you cut whatever substrate you wish for a face piece and make it fit with the 3 or 4 extra inches left exposed for feet. You can get two hinges from the local hardware store, or a piano hinge or get a PVC hinge from a local sign supplier and attach that at the top. Last, figure how wide your legs are gonna open up, cut a piece of decorative chain and screw it to two opposite legs so the thing won't open further than your desired span. Now you're ready to apply your print/message to the face. Nothing more than a frame-type carpenter skills are necessary for this. If you wanna get fancy, you can cut a curve or some fancy-schmancy thing at the top and now it's decorative.
For all of your cuts, use a jig or a stop, to make sure everything that is supposed to be similar ends up being precisely the same size. That's the key ingredient. For something like that, you should easily get $350 to $450 a pop and only have about $50 a pop invested, including your prints.