To start, you need one or more "Mason" type jars, a supply of fresh cherries, pears, sugar, cinnamon, vanilla extract, and the liquor of your choice - in my case vodka. Since you are substantially modifying the taste of the vodka anyway, it is not necessary to buy a premium brand.
Start by making up a "simple syrup" solution - heat water to just below a simmer, add sugar till no more will dissolve. Add stick cinnamon bark - I use about two or three sticks per cup of liquid. Allow to simmer for about five minutes and remove from the heat and allow to cool. Add two teaspoons of vanilla extract per cup of liquid and set the mixture to the side.
Clean the cherries and pierce the skin once with the tip of a sharp knife.I prefer to leave the stems on and the pits in. Clean and slice several pears, remove the core. Place the fruit in roughly equal quantities into the empty mason jar. Fill the jar about one third with the syrup mixture and then fill the remaining space with the vodka. Seal the jar and invert it several times to mix the liquor and the syrup.
If you have the space, put the jar in the back of your refrigerator. If not any cool dark place is fine. This is one that improves with age. I've used the fruit in as little as a week but I've also been gifted with some that had aged for more then six months.
An obvious caution - when you start to consume these - a little goes a long way and there is an absolute tendency to want "just one or two more."