There is also SS Great Britain and the Brunel Archive
Cliffton has a great seafood place called Fishers and a wonderful Indian restaurant called Brunel's Raj. Both are well recommended. Plus there is also the remains of the funicular railway, the zoo and a camera obscure all within walking distance of the Bridge
I have many happy stories of trips to Brunel's bridge in Clifton. I always try and stay at the Avon Gorge Hotel and get a room overlooking the bridge. It is so amazing at night!