I've been making a list of items, that can be made via whittling/carving in the field at camp, which are functional. It is mostly common sense stuff. Here's what I came up with off the top of my head. If you know of anything else, post it:
Item: Use
Whistle: Attention getting. Reserved for emergencies. Used because yelling can only be done for so long before vocal cords can't make usable sound. (Keep a, "Storm Whistle," on you, but learn to make a whistle as a backup skill.)
Tableware/Food Utensils: Such as fork, sharpened stick, spreader, spoon, ladle, grill scraper, chopsticks, cup, bowl, etc. Useful for eating food.
Tent Pegs: For tents.
Buttons & Tying Sticks: Used for fastening things together and tying knots.
Needles, Knitting Needles, Crochet Hooks, Looms: Repair and fabrication.
Pot Hanger: For hanging pots over fires.
Fire making: Feather Sticks, Fire Bow, Hand Drill.
Figurines & Game Pieces: Pastime entertainment/sentimentality. These can be chess pieces, checkers, shogi, go, dice, shuttlecock, etc.
Tool Handles: Replace broken tool handle or make a new one when packing in only tool heads or saw blades to base camp.
3-legged Camp Stool: Sitting & feet propping.
Hunting & Trapping Equipment: Such as slingshots, bows, arrows, darts, atlatls, trap triggers & mechanisms, etc.
Camp Shovel Stick: Digging trenches, foraged roots, and latrines.
Mallet: Installing tent pegs, processing meat.
Walking Stick: Walking aid.