I carried quite a bit of gear but as I recall the cstoms forms really want to know if you are bringing in things for commercial sale as opposed to personal use.
For example after xmas I was carrying two work laptops, an xbox 360 and all the bits that go with it, an iPad, 3 mobile phones and quite a bit of other stuff, I put my laptops on the forms and was asked if they were for sale - I said no they are work laptops, and was then told I should not have put them on, but waved me through.

I have a form here-
Question 5 asks:-

Are you bringing in Jewelries () electronic goods() and commercial merchandise () and/or samples purchased or aquired abroad.

So you could put down your use items or nout at all - but the last two trips i ticked nothing but then I was a visitor only.

HTH
Tone