It’s best to compile your list(s) where you can easily find them! Scraps of paper are too easy to lose, so are the backs of used envelopes! Using a spiral type notebook works well – select a size that you can slip into your purse. A bright colored notebook is easier to spot too! A clip board with an attached tablet of paper also works great! I have started compiling my lists on my phone. I can add or check off items on the spot because I always have my phone with me.