You can use the source parameter in a query string to customize the redirect after form submitsubmit
/cancelcancel
. Format looks like this:
https://yourserver/sites/sitename/lists/listname/newform.aspx?source=https://yourserver/sites/sitename/pages/someotherpage.aspx
https://yourserver/sites/sitename/lists/listname/newform.aspx?source=https://yourserver/sites/sitename/pages/someotherpage.aspx
Note that you have to have users click from a link you create somewhere and not from the usual new item link on the list toolbar. That may or may not work for your situation.