"Rats!"

"Phoo!"

"Dagnabbit!"

Kin of "shucks"

"Phooey!"

"The heck with you!"

"The hell with it!"

"___ to you!"

"Nonsense!"

"Hogwash!"

"Horsefeathers!"

"Doggone!"

"Drat!"

"Darn!"

"Shoot!"

"The heck with it"

"Darn it!"

"Dang it!"

Old-timey oath

Quaint complaint

"Cheese and rice!"

Wiktionary Word definitions in Wiktionary
a. (context slang euphemistic English) Crazy; nuts. interj. (context slang euphemistic English) nuts! Expression of dismay.