These Coloured Plastic Bags (which you can purchase very reasonable at Wholesalers for plastic bags. 

These are what I suggest to many adult retail stores and home party companies as they are cheap and quite durable. 

You want to order thick plastic bags because many customers do not want other people to see inside their plastic bag and see what they have purchases. 

Discretion is very important with adult novelties. 

Also think carefully if you want to add your logo to the outside of these bags, some companies have added a sticker to their bags, but remember your customer might have to walk in public with this bag and they might not want to advertise your company name if it relates to anything sexual.

The picture below are other coloured bag options for you to view.