Well over three years ago, I got myself a job lot of Star Trek micro-machines, and used many of these to create a set for Klin Zha. I didn't use all of them, and when I recently opened the box where the remaining ones were stored, I realised there were exactly enough of them to create a hnefatafl set ....
For the 'king side' I used Borg cubes and Terek Nor space stations as pieces and a Ferengi D'Kora Marauder as king:
Given the number of pieces, the board had to be a 9 x 9 board, and I chose to use matches to mark the squares.
If you're familiar with hnefatafl variants, you will be surprised that the kings side has six defenders rather than four or eight. This is purely because I didn't have more micro-machines I could use, but it also allowed me to model my set on a hnefatafl version marketed in the past by Shannon Board Games, which has six defenders against twelve attackers: