You're finally out on a kid-free night with your spouse, but then you realise you haven't told the sitter about your kid's allergies or special bedtime ritual or who to contact if you can't be reached. With a babysitter info sheet, your bases would be covered.
The idea, shared on Apartment Therapy, is simple: Print out the important information in the layout of a form with blank spaces. Then stick the sheet into a photo frame so you can change details as needed with a dry erase marker. In the example below, the information sheet has: the kids' ages, parents' names, home number and address, parents' mobile phone numbers and emergency contacts (including neighbours). The variable stuff you can fill in include where you'll be and what time you expect to be home.
Just keep the dry erase marker away from clever kids who might change that "bedtime at" time.
How to Make a Reusable Babysitting Info Board [Apartment Therapy]