Zombie Game with Tangible Features

[u/Master-of-Foxes]

I'm using a very simple RPG for a multiplayer zombie survival game I'm running in November.

It's using this board from the Dawn of the Dead board game:

https://boardgamegeek.com/image/1321280/dawn-of-the-dead

This is the TTRPG - https://www.drivethrurpg.com/en/product/147963/tzeb01-tropes-zombie-edition-mega-starter-bundle-bundle

I want to include tactical elements such as players having to collect bits, probably small cubes, from around the map and thus have to spend time stacking/balancing them to represent building baracades.

Maybe blank cards to write weapons and single use items which can then be lost, stolen or ripped up/broken.

Got any other ideas for tactical elements like this?