Answering question from Liana, brown paper bags can be found in the local online wedding sites. Examples:
Cheap RotiBoy look-a-like brown lunch bag from MarryMe. Pictures are courtesy from their FP.
Or another option from Ole-Ole Manis. They have brown bags in various sizes and shapes. Custom ribbons can be requested as well.
Pictures are from their blog. Thanks!
Hope this will help. :)