Green’s Dictionary of Slang

pretentious, humourless.

1954		K. Cowin Bushveld, Bananas and Bounty 69: I think our house would probably have been as artycrafty as Snow White’s cottage.
1956		J. Curtis Look Long Upon a Monkey 192: They sat on chintz-covered chairs in the bow-window of the arty-crafty coffee-house.
1979		J. Morrow Confessions of Proinsias O’Toole 38: Ah, Christ save us from arty-crafty perverts!
1985		B. Humphries Traveller’s Tool 80: At the top of the market we’ve got plenty of arty crafty frog-style restaurants who charge like a wounded bull.