All you have to do is find random objects in your house of go out to buy some stuff that looks similar to the organelles and then put them together.
PS Jell-O may be a good idea at first but it is so messy.
Nino
use a styrofoam ball and paint it :)
you go on google and type how to make a paper mache plant cell
Dont be an idiot 5 year olds can't use 3D Editing software.
with some Styrofoam balls
well, you can go to other sites
With glue or tape, possibly with markers or paint even!
If you want to make a project on uniform circularmotion you can give real life examples like on a merry go round or a carousle and you can make or stick the paper news paper models to your paper project which Makes it a 3d project.
don't use food
use tennis ball and pipe cleaner
3D printer
styrofoam from your local craft store.