I'm tempted to ask what DH is going to be mining gold with. Maybe a shovel and one of those over-sized pie tins? Is he taking those with him or buying new once he gets there? How about his boots or waders? I'm thinking you could probably stash most of your tools INSIDE some of his tools....a boot would hold a rotary cutter, scissors, small ruler, tape measure, box of pins, with the other boot holding FGs in ziplock baggies. A smaller mat would fit in the bottom of a suitcase.