You can make an external website page that has the exact same layout as an IJ post page. It's great fun for tripping people up and making them say "hey, I didn't think you could do that on IJ."
Just copy and past the following code into any plaintext website editor:
Find and replace any instance of 'YOURMODJOURNAL' or 'YOURGAME'. If you want to get detailed, you can also fill in 'YEAR/MONTH/DAY' and 'HOUR:MINUTE:SECOND'
If you want to get really trippy, all the links on the side (under class="nav-header") are just regular links and can be changed to anything you want.
Put your unique content between !-- start unique content --
and
!-- end unique content --
It's an external website, so literally anything goes!