Keeping a worm farm is an easy project
Compost is an acceptable amendment for blueberry plants, but it's important to test it before you apply it. Pay attention to pH and nutrient levels, and watch out for weeds.
Worm castings -- AKA poop -- add valuable nutrients to the soil and is easy to make. The hardest part is making the bin and that's not difficult.
Certain varieties grow best in the Pacific Northwest