i have a pflueger microspin reel - 6oz with 4lb test spooled. there are lighter reels by a little (i think around 4.75oz is lightest i've heard of), but they are more pricey - this one was around $22 on sale.
i use 2 different rods depending on what i'm expecting - a 4 piece eagle claw fiberglass rod (6.5 ft) called "pack it" that weighs 4.25oz / or a 5 piece shakespeare "excursion" 4.5 ft rod that weighs only 2.75oz. the eagle claw is actually nice action/feeling for me & i've caught fish over 4lbs on it comfortably, but the light action tip makes even tiny brookies and goldens feel lively. the shakespeare rod was around $12 and the eagle claw around $20 if i remember right.
i sometimes use the cheapo plastic rod tubes that came with them, but more often i actually just pack them without a tube. likewise, i go without a reel case of any kind. btw - these tubes are very light: the small one is 1.75oz and the larger one 3oz, but i haven't cut it back yet (there is about 3" extra space - i may also make a lighter cap & butt for this one).
i use small, round plastic container (like they sell on this website) for my tackle box - it weighs like .3oz or so
tackle varies depending on what i'm expecting, but usually a couple spinners, a couple jigs, a few flies & a small casting bubble or two. all together maybe 2-3 oz. most of the time.
i think my entire fishing setup when i went on jmt last year was in the 11 ounce and change ballpark (i took the smaller rod)