Captain Gerd Puppel (Lufthansa A340 skipper) has a varied and comprehensive set of worldwide charts (
www.planningchart.de) which when laminated at A4 size fit into your flight folder nicely and allow quick reference along with being able to show the CC where they are (approx) when you are asked the usual "Where are we now"?
Usual caveats apply about not for operational planning and reliability of freqs, updates etc, but overall a nice thing to have (in colour) when you want a quick look at where you are as opposed to unfurling the big paper charts