All these follow the same theme, pick the one or ones you like best perhaps.
A Standard Bearer for our proud forts.
Bonus when he's alive in combat, negative thought if he dies. He follows the leader of a squad and holds a battle standard. To make it easy have the weapon as a spear, unless you wanted a unique one like a polearm. Easier to have one per fort like a noble or maybe one per squad if you wanted.
An idea to make standards more useful at lower levels, not to use them in combat, but as a passive morale booster. Each militia squad, or the militia as a whole, has it's own banner, which is displayed somewhere in the fortress (preferably somewhere where the militia members see it frequently), which is updated as the troops win fights in the fort, such as repelling goblin sieges or megabeasts. Seeing it will give them a happy thought and give them slightly more performance in battle.
Once toady gets to actual mobile armies, then they can take the banner with them when they go to war, and we'll get other effects, but this might be a good use for it for things as they are now.
Inspiring Ale! A Feast? A day dedicated to a Dwarf?
At the Tavern? A dwarf is rewarded with a barrel of the best ale if he kills the target you set. You can set one target at once only every year and it will become a focus for all nearby dwarfs. Can be swapped with feasts in the dwarves honor, providing large happiness boosts. A day dedicated to a particular dwarf, making him famous for a season, or a year, and more likely to marry etc
.
It might even be that you have a season dedicated to a particular dwarf? Or every ten years a celebration is held perhaps, depends on the level you want to set this to.
A Dwarven Battle Herald.
Blows a horn or beats a drum to rally the troops, inspires them or sends them into even more of a frenzy, giving them increased attack but decreased defense, or just giving them a boost when the odds are against them. VS Megabeasts, Titans etc.