Start by finding a cute jar. I bought these at Wal-Mart for around $6 a piece. If you can't tell, they have a snowflake on them. You can also find individual jars at Hobby Lobby (don't forget to pull up their 40% off coupon on your phone if they aren't on sale!).
Next, mix up your oatmeal. Here is there recipe I used:
3-4 cups quick cooking oatmeal (not instant)
1 cup dried fruit (I used 1/2 c cranberries and 1/2 c chopped dried apples)
1/2 cup sliced almonds (toasted in a 350 degree oven for 8 minutes)
1 teaspoon salt
2 teaspoons cinnamon
1/4 teaspoon cloves
1/4 cup flax seeds
Put all ingredients into a gallon zip top bag and shake to mix. Pour into jar, filling to the top (contents will settle). Notice there is no sweetener added. I know that each of my grandparents like to control the sugar they take in, so I left it unsweetened. I will include with the gift a small bottle of maple syrup, like the ones you can buy at Cracker Barrel.
After completing the jars, make a card with instructions. I provided several options for my grandparents so they can choose a serving size.
1. Combine water and oats in a medium microwaveable bowl. For a small serving, use 1/3 cup oatmeal mix and 1/2-2/3 cup water. For a larger serving, use 2/3 cup oatmeal mix and 1-1 1/3 cup water.
2. Microwave 1 1/2 to 2 minutes. Stir.