Customs at the airport here don't care about anything unless it's food / plant items.
I've brought back tons of stuff (multiple laptops, projector, ps3, etc...) all at same time and they don't even check a single thing let alone 50% of the time they never even take my declaration card.
If you are bringing lots of equipment though, they may have questions I'm sure, but just tell them you are shooting models at the beach for a magazine or something. I'd say you'd be fine.
