...for ideas on how to decorate this aisle.

This has been one of the things I've kept putting off thinking about because I can't figure out what I should do that wouldn't cost an arm and a leg. I bought an aisle runner because I feel like I do need to create a "pathway" but should I make something to go on the sides of the chairs? Something to line the sides of the pathway instead? Argh.
I don't think I need to do a whole lot because the church is already so nice, but I want
something in there. What do y'all think?