Slice oranges 1/4" thick and place onto a cooking rack.
Place in the oven and turn on the heat to 225 degrees. Once oven is pre-heated check the oranges. This drying should take about 2-3 hours and you'll need to check on the oranges every 45 minutes. You want them dry so they don't mold.
Remove oranges from oven and let cool.
Combine cinnamon sticks, orange slices, aniseed, pine cones and almonds in a large bowl. Mix well. I do this with my hands.
Place a small amount of potpourri into a bowl. Add essential oil to a cotton ball and place in the center of the bowl. Top with more potpourri to cover the cotton ball.