It's Cow Game! Version 2.04!

Interactions/Pickupable/Pickupable.gd

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+extends Interaction
+
+func _ready():
+	add_action("Pick Up", pickUp)
+
+func pickUp():
+	var item = get_parent().item
+	
+	var player = GameVariables.player
+	if player.currentInteractingItem == item:
+		player.change_state("Idle")
+	
+	if get_parent().keyItem:
+		InventoryManager.add_item_to_inventory(item, 1, "keyItems")
+	else:
+		InventoryManager.add_item_to_inventory(item)
+	get_parent().queue_free()

Interactions/Pickupable/Pickupable.tscn

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+[gd_scene load_steps=3 format=3 uid="uid://bt2n0yqtg4rdu"]
+
+[ext_resource type="PackedScene" path="res://Interactions/Interactable/interaction.tscn" id="1_sas5q"]
+[ext_resource type="Script" path="res://Interactions/Pickupable/Pickupable.gd" id="2_v4ydm"]
+
+[node name="Pickupable" instance=ExtResource("1_sas5q")]
+script = ExtResource("2_v4ydm")