Short answer, everywhere you can!
Catalogues – I have a sticker that I put on the back of my catalogues with my name, phone number, email address and website. I want people to contact me in whatever method they are most comfortable with.
Products – I put a small re-order label on all my products. It has my name, phone number and email. There isn’t much more room. They are return address labels that I buy from Staples and they come 80 to a page.
Business Cards – This is a no brainer, all of the above information is on my cards as well. I always put a few into each customer’s bag, just in case. You never know when they might pass your card onto someone else.
Care Instructions – With my business, I give my customers care instructions for their product. My contact information is on there as well. I use one of the same stickers I use for my catalogues.
Invoices – I have a stamp with my name and phone number on it that I will stamp onto the customers copy. I have also been known to just staple a business card on instead as that has more complete information on it. Either method works but it’s about getting the information on there.
As you can see, you can put your information everywhere, and I fully advise you to. I bought some product from a rep a while ago and I want to buy more, but she did not put her contact information on the products nor did she give me a business card so I have not been able to find her.