Front rack suggestions

realistically, what can it hold while putting miles down on a gravel road?

Ridden it twice now, about 30 miles, and had maybe 2kg on there this morning. It's always jiggling around, especially on bad roads but don't see it coming undone, even on gravel.

For gravel, I recon I'll load it up with a tent and some additonal bags (maybe roll mat or small sleeping or clothes).