I have found it impossible to find a lighter serviceable dish than this one at 15 grams which comes free eg with a packet of Sirena Tuna & Rice. It holds just over 250 ml making it just big enough for my (hiking) cereal in the mornings, or can be used when you are sharing a meal. It is well nigh indestructible – I always carry a couple for Spot (the dog’s) food and water too!
I always use a pot with a frypan lid (such as this one http://www.theultralighthiker.com/hiking-cookware/) so I have two cookpots or a pot and a plate. Sometimes it is handy to have another plate such as the one above (eg if you are cooking two dishes (such as fried sausages and mashed potato, or: http://www.theultralighthiker.com/he-hiked-with-a-falafel-in-his-hand/)
The blue cup on the scales below is one that I bought several of from a $1 store years’ ago. It weighs 29 grams. I am yet to find a better. It has been with me now for 18 years, and has done great service! The other blue one is a ‘Neverrfail’ water cup I took home from the doctor’s surgery the other day. It seems very flexible and not at all inclined to break. It weighs 5 grams. I think you would have to be careful drinking coffee out of it, but it would be possible. It would be fine for the traditional hiking drink of Bacardi 151 and water though!