Oops, it doesn't look like 'give something away give something away day' is a national day..

Other days

ponytail

Ponytail Day
boy friend

Boy Friend Day
frozen yogurt

Frozen Yogurt Day
reading

Reading Day
chocolate milkshake

Chocolate Milkshake Day
ormille

Ormille Day
me

Me Day
ruby

Ruby Day
blanket fort

Blanket Fort Day
hot chocolate

Hot Chocolate Day