I would "borrow" the techlogs to the aircraft (or something else they cant do without). You took them home for safe keeping as you were concerned about some burglaries in the area, weren't you?
Forget the small claims court, and any other legal way. You will not get any money from a company that doesn't have any.
I worked for a flight school that went under over 2 years ago, they owed more than £60,000 to staff, students, suppliers etc. No-one ever got a penny.
It doesn't matter how many judgements a person/company has against them, if they have no money or are unwilling to pay, then you won't get a penny. Trust me.