Shortcut or trick to copy separate objects on 1 transparent layer onto multiple layers?

Hi,

I'm wondering if there is an easier way / shortcut / command to copy multiple separate objects that are on 1 transparent layer onto separate layers besides selecting each separately with the lasso tool and copying and pasting each on to it's own new layer individually? I often paint separate elements on a page, scan it and then need to separate the objects onto their own layers so I can import into Illustrator and continue to work digitally. 

Thanks in advance!

Wendy