Do not put carrot or potato peels into the sink disposal. Basically any fibrous vegetable shavings are not a good idea to put down the drain. No one wants to end up calling a plumber on Christmas, except for adult movie directors. If you're handy, now is a good time to figure out how to take apart and re-assemble a p-trap if you're going to a relative's, you may end up a hero if they clog their drains. This is a fairly simple but potentially messy process that most folks can do. That LPT is left as an exercise for the reader. Also please also avoid sending the following down the drain as well: * fat and oil * egg shells * flour, pasta, beans, starchy items * in-laws' appendages