Lighting not just your home's exterior, but also your yard, can be done for almost no money with solar power -- Must do this in our backyard - beautiful! And it would make summer nights even more magical! I love the big tree!
Use extra edging (in this case gray concrete curb with a slant) and alternate between rock and mulch to add definition and create a fun, artistic design along your backyard fence. I would need rubber mulch to keep cats out