Everyone loves a stairway with lights, we won’t admit it, but they evoke childlike excitement among adults. The secret is you can achieve this with minimal cost through LED stripe lights. Simply install under the handrail. Available from Aliexpress, Amazon or Ebay. Difficulty: 5/10 Cost: $3.34 per 5m (on aliexpress)
bored with your living space? cove lighting can add an understated elegance and breathe life into the most uninspiring room. we’ll show you how we built ours using led strip lighting and demonstrate how to wire it up. we’ll also give you the lowdown on this type of lighting and share other cove and lighting options that might be a perfect fit for your budget and décor.
LED light strips. Another pinner said, "Put these on our awning and LOVE THEM! Very easy to install (has adhesive) and lots of choices for color combinations and flash pattern. About $30 for a 16' strip."
Flexible LED strip lighting for the kitchen from Hafele https://jhauto.en.alibaba.com/product/60541497048-212056234/White_PCB_5M_600_LEDs_Flexible_LED_Strip_Waterproof_IP65_RGB_Tape_Light_Decoration_For_Holiday.html