Nice graphics, controls and UI.
Something i'd like to point out; if im not mistaken you are attaching the objects you carry as children to the player's game object? And I assume you crouch (CTRL) by re-scaling the player's game object ?
Because if you carry an object and press CTRL the scale of the object changes with the player.
A simple and quick solution to that can be, On carry: position the object to a child's object position (with out parenting)
Hope you don't mind me point it out as I'm sure you know how to fix it but the time was short, overall nice work!
Best of luck!