Place on rimmed baking sheet and brush all over with canola oil.
Bake at 400 degrees until soft. (Ours took about 75 minutes.)
Let baked potatoes cool until easy to handle.
Cut off the tops lengthwise and discard (or eat!).
Scoop out the centers and add to a large bowl.
Add butter, milk, ½ cup of cheese, salt, and pepper, then mash.
Scoop mashed potato mixture evenly into potato skins, then top each with shredded cheese.
Broil for about 10 minutes until nicely browned.
Slice cherry tomatoes in half.
Attach a tomato nose to each potato mouse with a toothpick, then tuck pieces of chive behind each side for whiskers.
Add green onion tails, then add your radish or cucumber ears and use blueberries, olive slices, or raisins for eyes, and you're done with your unsqueakably cute creations!