I always keep any loose or leftover nuts and bolts. If you have any friends or are close with your mechanic I'd bet they may have the same bucket of nuts-n-bolts laying around. Any hardware store would have a wide variety of the stuff. They may be the same size that hold the dash bezel in place. Take one of those out and see if it works. Although, if you lost the OE bolts chances are the bolt hole has widened. You may need a size bigger.
'99 WJ, 4.7L, completely bone stock, except for 245/65/16 tires
'76 Jeep Grand Waggy, 360cid Edle 660cfm/edle intake Quadratrac
'02 Exterra 3.3L, 5-spd, traded YJ for it :(
'89 YJ 2.5L, 5-spd, Borla header, dynomax super turbo muffler, Big-O XT 30x9.5r15
2004 Jeep Liberty Renagade 3.8L 2wd
'86 XJ 2.8L V6, 5-spd manual tranny (My 1st)