You certainly gave me a laugh on this one
baambaam
I can't remember when exactly, but I
thought I read something about Bali's first "Adult Toys" shop opening somewhere. (Or maybe it was in Jakarta.)
One sees carved wooden dongs all over Bali. Some are functional bottle-openers, etc; others, judging by their size, are wishful thinking.
Maybe the guys in Mas village could implant a battery for you...never know, it
might work.
Maybe you could tell customs it's a memory-stick for a computer and laugh a lot.
I once brought in an expensive music synthesizer keyboard and when asked what it was, told them it was just a
boom-chikka-boom-chikka organ (no pun intended).
I wonder how the postal workers are going with the two you sent before?

Treat children like adults, and adults like children and you can't go wrong. - Kinky Freidman