What do you mean by "product ideas"? You've already specified your product idea. You want a round black table for two. You can find those any place that sells furniture, including department stores, home furnishing chains (both high and low end), eBay, Etsy, antique stores, vintage stores, thrift stores, restaurant supply stores.

You can specify whether you want a pedestal or legs, and whether you want chairs that come with the table as a set, when you go shopping—whether you do that online or at brick and mortar stores. If you have particular style in mind, specify that when shopping as well.

Try etsy. For instance, solid wood and choose your color:

https://www.etsy.com/listing/1806112154/round-dining-table-with-tulip-leg-solid?ls=a&ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=black+wood+30-33+inch+round+dining+table&ref=sc_gallery-1-1&pro=1&frs=1&variation0=4886940729&plkey=EuEJn85PS3QjYVUZAMrU9_mF8a68%3ALT77243bee3d575e90938362ade7c8b92efaa22346

Room & Board has several small round table styles. You can choose the table top and pedestal. Here is a photo of the ‘Aria’ table available in 27”, 32”, 36”. The 36” has more options (for example, 30 tops to choose from).

IKEA Docksta comes in black