I did that once so I make sure that I don't do it again! I have got into the habit of putting an empty bottle next to my bike after putting the full ones in the fridge. When I get the bike out the next day, the empty bottle reminds me to go to the fridge for the others.I also fancied ice cold water so I put my bottles in the fridge last night. Good to have a change of routine sometimes...Well maybe not. Rode off this morning for the start, 35km down the road. AND FORGOT MY BLINKIN’ BOTTLES!
When on my bike I carry my stuff in a small backpack. For yesterday's HOT sunny ride I had frozen a 500 mL bottle of water and carried that for a mid-ride top-up. By the time I came to use it, the ice had melted but the water was still nice and cold.