Blueberries

Wash blueberries and pat dry and place in a single layer on a cookie sheet. Freeze until solid and then transfer to freezer bags. When you want to use your frozen blueberries, don't defrost them; add them frozen to recipes to ensure their blue hue doesn't bleed.

Peaches

Peel, pit and slice peaches. To freeze, place slices on a baking sheet. Transfer frozen slices to airtight bags.

or, from the Ontario Tender Fruit Producers Marketing Board.

Peaches

Peel, pit and slice. Add 1/2 cup (125 mL) granulated sugar and 1/4 tsp (1 mL) fruit preservative to 4 cups (1 L) sliced peaches. Pack tightly into plastic containers, leaving 1-inch (2.5 cm) air space at top. Top with a crumpled sheet of wax paper and seal tightly. Frozen peaches can be stored for 1 year.