If you do more of the random Thieves' Guild radiant quests than needed there is at least some recognition:
As you finish the additional jobs that Vex and Delvin give you, trophies of recovered items begin to fill the shelves too:
Jeweled Candlestick appears after you complete 5 jobs.
Ornate Drinking Horn appears after you complete 15 jobs.
Golden Ship Model appears after you complete 25 jobs.
and so on. I want to know if there is anything similar for the Dark Brotherhood.
Best Answer
Nope. Just more gold, and the satisfaction that you serve Sithis and the Night Mother.