Cider

Watermelon or cantaloupe?

watermelon Pickles or olives?

Pickles as long as they're sweet.

Swimming in pools or lakes?

Pools for sure!

Sweet corn or popcorn?

Popcorn, with butter and sea salt.

Multicolored eyes, or heterochromia? (Not the same)

Heterochromia since that includes multicoloured eyes as well as other bi-coloring eye appearances beyond the standard.

Role playing video games or puzzle video games?

Puzzle, all I ever play is Tetris.

Lego of Erector?

Lego.

Train set or scalextric?

Scalextric. I did not know that was its actual name, though. I always just called them slot cars XD

Plushies or action figures/figurine toys

Action figures!

Glasses or contacts?

Glasses. Contacts are too much of a hassle

Shorts or pants?

Pants, I only wear shorts to bed.

Shoes or Boots?

Shoes. I don't mind boots either (both work boots and more decorative ones), but I wear them less.

Stripes or spots?

Stripes. Prints or solids?

Prints

Clear skies or partly cloudy?

Clear skies!

Sunshine or Moonlight?

Moonlight. I'm a night person.

Popsicles or lollipops?

Tough one. Lollipop.

Tea or coffee?

Tea (herbal)

Milk or soda/pop?

Milk. I'm not overly fond of cola. Smoothie or Milkshake?