I've seen this cool pick nick table thingie in the Touratech catalogue:
Of course this only fits to their own Zega panniers.

I haven't found anything readily available for my Trax panniers. But I can't imagine it can be too difficult to bodge up something myself. I just need to make sure it is small enough to fit inside the pannier for caryiong. And to create "hooks" that fit nicely into the slots on my panniers for a stable table.

But before I dive in I was just wondering if anyone on here had already attempted a similar thing? It could save me some measuring and testing work