I don't have any other suggestions.
Well, how about this.
You put your data in a cell out of the way.
edit|copy
back to the cell you really want to use
shift-edit|paste picture.
Try to resize and reposition that where you want.
You could even shift-edit|paste picture link. Then when that other cell
changes, so will your picture.
I'm not sure why you need this, but you may want to reconsider your authoring
tool--maybe excel isn't the best program for this type work.