Jay Keating and his dog Buck are roughing it in the snowy Northwestern Territories, hunting down an elusive cryptid that has been terrorizing the residents of the nearby town. However, when a storm front blocks the road to civilization, it would seem that Jay and Buck might be the hunted in the descending fog.

Waking up is tough. Waking up surrounded by strangers only to be told that you are the last survivor of a great battle is worse.

You awake from a very cliche car accident-induced coma to come face to painted face with a group of rebels leading a revolution against an evil corporation. You can choose to fight alongside them, join the evildoing Business Class, or abandon these lunatics in a hilariously deadpan and pun-filled story.

Hello, I'm Marathon, and I am currently doing some paper graphing for my story, "Out in the Cold," a horror adventure storygame about a man and his dog fighting both the elements, isolation, and a strange Yeti-like cryptid monster. This monster has allegedly been doing some damage (structural damage, pet disappearances) to a small village miles outside of the main protagonist's (Keating's) cabin home, and it's up to him to solve the mystery of the beast.

One of the key components of the game is researching the monster (who is later established to exist) and discovering weak points that could kill it. This means that the player will be building things out of supplies found throughout the storygame. 

I would like to condense the building segments to a specific place, i.e a workbench in the protagonist's home. This way, the player can leave the home for supplies and information to progress the story, and come home to assemble the items to create a new useful item. Items assembled don't necessarily have to be weapons, but also quest items.

An example would be:

WORKBENCH

Keating clears some space of his workbench and lays out his supplies.

• Rusty Pole
• Railroad Spike
• String
• Old Book 

 (Newpage) WORKBENCH (Rusty Pole)

Keating extracts the rusty pole from his tattered backpack. Observing it, it would make quite an effective baton, but another component could make this a highly lethal weapon on Cryptid X.

• Railroad Spike 

(Newpage) WORKBENCH (Spiked Pole) 

Using a bit of force, Keating lines up the spike on the pole. With the force of a hammer blow, he drives the spike into the pole, giving it a more lethal edge.

(NEWITEM: Spiked Pole)

So I'm asking you experts what's the best way to do this "item combination" gimmick? I'm sure there are games that have you combine two items to produce a new one. Is there any way I can make "item combination" in one place?

Thank you!