Okay, why dont you do that ?
Use a family for all your objects. Make an array.
Give each object an instance variable containing its name.
Loop trough the famely, store the 'name' on the x axis, and all other things like X,Y,heigh, width, variables, x speed, y speed, everything on the y axis.
Store that array in the local storage.
Retreive it. Make a loop on the x axis.
If value on the x axis = name ... create a certain object and give it all things back that you stored on the y axis
That is a lot of work. And, basecaly you make then you own system load/save. I dont understand why one would/should have to, if its allready there.