12-Pack Otdair Waterproof, Solar Outdoor Lights $15.90 @ Amazon

available in silver [amazon.com] for $15.90 or black [amazon.com] for $18 after clipping 47% off coupon on the product page.

I can’t find exact size of these, but I’d imagine they are on the smaller side, so expect to use 2-3 per 1 area