Listen Squalo hates it too they can totally bond over it. Except it also has home vibes and everything is terrible.

Mostly it'll be motorbikes and parts, possibly a car, something completely disassembled that may be hard to pinpoint, some engines and other parts laying about... it's technically possible to build a working something (or a few somethings) if they have the know-how.

Squalo isn't really good with that sort of thing, though he probably knows a few fixes to most common problems; it's just the sort of environment that has a homey feel for him, gang hangout and all.