I'll go to the foot of our stairs! (used to express extreme surprise, e.g. when someone one hasn't seen for twenty years turns up on the doorstep).
Thoil: (approximately) to justify, e.g. "They sound alright, but Ah couldn't thoil to spend £10 on a ticket." I might be able to afford the £10, but I could think of better uses for it. (I'm not sure whether this word is used outside Halifax and Bradford.)
Keep band in't nick: not an exhortation to imprison musicians but to keep things running, literally "keep the belt on the pulley".
A packed lunch can be snap, jock or bait, progressing northward.
Someone mentioned the word "wick", meaning lively, or alive when it shouldn't be, such as when a sack of rice is "wick" with cockroaches.
I'm always mildly amused when Radio Scotland mentions the Wick Accordian & Fiddle Club. I imagine them always playing reels at breakneck speed. In the Bradford area there is the exact opposite: the Idle Working Men's Club!