Depends on what you need it for. If just for decoration/looks and you don't need it be secure, you can buy panels like this, which are stand-alone stand-up fences. But they aren't particularly secure/strong. I suppose you could tie the pieces together for a little more security, but really if you want security, you have to have tools.
http://www.theparkcatalog.com/white-plastic-fencing-/portable-picket-style-fence-panel/151-1003?gclid=CI_U0OPv8LcCFSJlMgod4QoAzA