Narrowing the ideas

after discussing with the group, we have to narrow down the ideas which we already did.
but we have refine the ideas even further because the '101 ideas' was suppose to be just a kick-start.
more discussions...
now we have finally decide to look into the so called favourite 3
the 3 ideas are basically sort of mixed around with each other
in a way they can overlap one another

1. Extra replacement parts
2. 3D printer
3. Multi-functional furniture

we have to think about which one is the best one to go for, 

we weight them according to their advantages and disadvantages

to see which of these 3 chosen ideas will be the most ideal solution 

to our problem.