I like to reuse old materials and to put them into a new context
So I made a custom sleeve for my MacBook Pro out of a felted woolen blanket and a tent canvas. Both materials I bought in a swiss military shop during my last trip to my home country.
Step 1: What you need
a woolen blanket and a tent canvas from the swiss army shop
of course the usual sewing supplies...
some ruler (take the long one)
as well you will need a drill with a 4mm drilling bit
and lots of patience