Sure you have. It’s the same way you’d smuggle dirt from tunnels out of a NAZI concentration camp. They used sewn pocket pouches. You’d use a modified car bathroom nozzle (fitted to your briefs) with a 1’ wide clear rubber hose run down the inseam leg portion of your trousers down to the cuffs.
Once at the grave site, you’ll re-tie your shoe laces and pull the small cork out of the bottom of the tube (by the cuffs). From there, make what holy gestures you need to by his grave stone ( you might buy more time if you have someone with you taking pictures).
At that point, just think of Niagara Falls, let go of all of your inhibitions, and do it all while looking up and mouthing the words, " Thank you, God…!"