round	of ammunition
rumble	of thunder(in the distance)
means	of transport
puff/wisp	of smoke( small)
suit	of armour
stroke	of work(negative sentences)
slice	of bread/toast/meat
ray	of sunshine(used figuratively as well)
shaft	of sunlight(literally)
moment	of leisure/happiness
stretch	of scenery/countryside(piece/bit only in theatre)
scrap/morsel	of food
token	of gratitude(a gift, as a tangible expression of it)
item	of news
splinter	of wood/glass