The scythe blades are made from plastic card. I've used my hobby drill to make damage to the blade, like you'll see om all melee weapons in the Death Guard model range.
The Deathshroud Terminators are casting a smoke cover over themselves. So I've made some chimneys on their back from cut up lollipop sticks.
I've given two of the models a new front armorplate. The bits are from the Blight King models from Warhammer Fantasy. They fit fairly well, you some greentuff cover was needed with one model. The nice thing about Nurgle followers is, you can just make something tentacly.