Almost every city now has Pay & Display machines that dispense parking receipts that you need to display through your windshield.  I hated the accumulation of receipts and many times they would get stuck between the windshield and the dashboard.  Once, my receipt blew off the dashboard and I got a ticket!  I invented Park ‘n’ Display (http://www.parkndisplay.com) to deal with these problems. 

Park ‘n’ Display(tm) displays, holds and stores parking receipts, placards and even toll pass transponders.  The device is attached to the inside of your vehicle's windshield with VELCRO® brand fasteners, making it simple to attach and detach. Our patent pending design allows for quick and easy insertion and removal of multiple receipts and placards so one can remove them all at once for disposal or for tracking business expenses.

The initial response by users to the Park ‘n’ Display device has been fantastic (especially from commercial users).  Visit http://www.parkndisplay.com to buy one for $4.99 and 2 for 7.99 (with S&H included)