You're worse than Flatflyer.
There's an onItemPickUp event around here somewhere. Use that event to set the item to NONE. Then use minigame events to reset it.
that's what we did on my HG server
I could send it to you to host if you want to host it, Brickitect. I don't really play this game anymore.

i have a folder with all the add-ons that go with it. that's the old map. it looks better now, especially that empty snow area
honestly I doubt you'd be able to make a very good one. HG only works with a huge map and your building style is so detailed I doubt you'd get more than a few 64x64 plates done. mine isn't very pretty but it's very fun to play.