I need a creative mind right here!?

Okay so I am doing this invention convention project and I need an idea for an invention. I have previously invented in the last two years a candle wax blocker that prevented wax from messing up candle holders in my church., last year i made a comfy sink saddle that was cushioned to make washhing dishes more comfortable and prevented water from getting on your shirt. I need another idea. first think of a problem you have in everyday life and then think of an invention that u can use to fix it. I don't want to do anything like foot scrubbers that you can slide on to clean your floor. Please help me think of something unique.