16 - A humble home
My home, my castle - as the saying goes. With dwarves, it's literal. After all, a dwarf needs a safe home before he can consider getting himself a nice lass and some wee dwarflings. Thus the value of this gift.
The dwarves build you a solid house that could withstand the apocalypse - or half a dozen of them. Complete with siege engines on the rampart and in the tower, of course - what good is a house that can only take punishment, and dish out none?
17 - A delver buddy
Actually a miniature metal golem, the delver buddy is indispensable below the earth. He can watch your back while you dig, crawl where you cannot go, measure time without fail, store your gold nuggets for you and watch out for dangerous gasses and tremors. He also passes you tools upon request, and holds one small flask of brandy, one torch and a piece of deep mole jerky in case of emergencies.
18 - The funny tome
Dwarves value good humor, they just differ from other races in the definition of "funny". This pocket-sized booklet holds scores of dwarven jokes, tried and true. For example: "Why aren't you ining for gold today, Hrangwulf?" "Ah, I think I already have enough." is an oldie but goldie.
19 - Boomsticks
Dwarvs like fire and loud entertainment. Fireworks exactly fit the bill. You get handed a huge box with crackers, rockets and flares sufficient for a lifetime of Silvesters, or blowing up a medium-sized city.
20 - A reliable ride
You get a faithful mountain pony. They can subsist on a handful of oats, resist temperatures near absolute zero, can drink more vodka than you, and handle any terrain, whether tunnel, decris or near-vertical slopes. Also, when faced with greenskins, they're of more use than an average human militia.
21 - The Ring of Friendship
A subtle steel band with dwarvish writing, the ring bears a subtle enchantment. Any dwarf will know what you did for its creator. Even dwarves born away from their home holds, in the lands of man, will recognize and honor the ring.