nopAttachProducts plugin allows the store's owner to attach products on blog, news, topic pages for promotions. Plugin is very plain.

Key Features.
1. Each blog, news, topic has new tab in admin mode.
2. You cans set the widgetzone on blog, news, topic page.
3. You can set the maximum count of products on blog, news, topic page.

Note.
The unregistered version has only one limitation – 25 products.

Compatible for NopCommerce 3.90.