Ideas:

bubble bath day (jan)

peanut butter day (jan)

Drinking Straw Day (Jan)

Peanut Brittle day (Jan)

Carrot cake day (Feb)

world nutella day (feb)

Strawberry day (feb)

world compliment day (march)

pi day (march)

international day of happiness (march)

Grilled Cheese Sandwich Day (april)

international pillow fight day (april)

world party day (april)

Museum day (May)

chocolate eclair day (june)

chocolate day (July)

eat an apple day (sept)

minature golf day (sept)

world smile day (oct)

international tongue twister day (nov)

origami day (nov)

french toast day (nov)

brownie day (dec)

christmas jumper day (dec)