Ok, before anyone says anything yes I know this is pretty much cheating, but you know what? I love trying to come up with creative fixes for things I dislike so... yeah.

Imagine you're out in the world looking for new land, resources etc. Maybe you land on a new island and find a buttload of copper and tin. Maybe you scale a huge mountain and you get some sweet dragon's egg, or you have valiantly fought off skeletons, drauger and hellish abominations and now have that iron you needed. After having explored and then toiled for your spoils its getting late. You dont want to walk/sail all the way back to your main crib because them shamen greydwafs are gunna be about and try to blow toxic fumes up your bunghole. You dont want to waste time and materials making a new shelter and thankfully you brought everything you need for a portal that you can tether to one previously made at your home. The thought of sleeping in your king sized viking bed while listing to your fermenter brew your favorite mead sounds so nice and relaxing. Suddenly you remember you cannot bring that ore or the dragons egg/whatever it is with you. You make the portal, drop a quick chest to stow your materials in and step through to sleep in your viking hostel. The next morning you wake up and dread the long haul trip back home to bring your goods back. You just want to get it over with and finally make that ancient bark spear or huntsman bow you've been longing to make. Sound familiar? Ok, here is your step by step process to getting them goods home without fuss or muss.

1) Log out. When you get to the main screen make a new world from scratch. Name it whatever you want then select it and send your character to this new world. You will find yourself starting at the shrine like always. Whats even better? You will have everything on your person, just like you had when you logged out from your main world.
2) Go find some wood (or pull out the stack you brought with you form your main world) and build a very simple shelter. Build yourself a nice little chest and place all your non-tranporatable materials in it.
3) Now, log out again. When you get to the main screen log in to your main world. You will find yourself standing in the same spot you left previously but now without your items you left in the alternate viking purgatory. Make your portal and step through because nothing is stopping you now.
4) Once you are safely at home again log out again and then select the alternate universe to join. You will find yourself standing in your little shelter with all of your non-transportable items safely in the chest. Pick them up. Log out.
5) Log back into your main world and lo and behold! You have successfully transported all of your metals/materials to your home without having to move more than a few feet.

This process is clunky and the back and forth is obviously not ideal but this allows you to save a LOT of time if you happen to branch out to new islands for materials/boss fights and dont want to waste 20-30 mins to walk or transport goods back and forth.

Another way to use this exploit is to treat it like a secret storage bag. You're out in the black forest and just pounding away at ore when you suddenly cannot carry anymore? Well just skip through the multiverse to your alternate timeline, drop off your heavy load into the chest, skip back over to the main world and keep pounding away at the ore all day long! Keep just enough on you when you're traveling back home to not be overburdened and then when youre sitting in front of your chests at home where you store your materials log out to your alternate space, pick up the extra materials then log back in and you have transported all of that materials without having to use that clunky cart.

Anyway, hope this helps. Keep on viking on'

-Skeeks