Here are a few ideas for cool phone numbers:

1. A phone number that spells a word or phrase, such as 1-800-FLOWERS or 1-800-PET-CARE.
2. A phone number that’s easy to remember, such as a sequence of repeating digits like 1-800-222-2222 or a palindrome like 1-800-282-2828.
3. A phone number that includes your name, business, or brand, like 1-800-DAVE-CO or 1-800-ACME-INC.
4. A phone number that incorporates a memorable date, such as a birthday or anniversary, like 1-800-JAN-01 or 1-800-JAN-01-19.
5. A phone number that uses a catchy or memorable slogan, like 1-800-EASY-AS-123 or 1-800-GOT-JUNK?

I hope these ideas help spark some creativity!