Scale- You are advertising theses items as decorative and unique (kitchen ot table) gadgets, along with descriptions, so potential customers will not expect them to be tall lifesize wooden sculptures or tiny ornaments. It is however a good idea to include objects that show relative scale but relate to the item's usage such as nuts or other foodstuffs that the items are intended for. Showing the item in hand or in use can also be helpful in providing scale and illustrative value.

The images you have posted do show sharp detail and can give any potential buyer a decent idea of waht they can expect, however, some improvements will add depth, texture and dimension which may be more appealing and increase your sales potential.

The trick is in the lightng. In the tutorial in this section and in this thread I have a basic suggested lighting setup for product work that will work well with wooden items and many other product surfaces. It's a simple system with one light source in an overhead softbox and a few reflectors and a clean background. In the attached image of a carved item, the light is coming in from the side, as in a portrait, but the setup is similar.

The system will bring out the detail in wood grain. Another method of improving the rendition of wood grain on highly polished or varnished surfaces is the use of a CPL (polarizing) filter to minimize glare and cut through to the grain. In certain carvings the specular highlights are desirable but if the are not wanted the filter will minimize them. You rotate the filter until the desired effect is achieved.

In your images, the background seems a bit drab and wrinkled. You can acquire seamless background paper in smaller rolls or use a plastic background material that is commercially available- like the one in the attached images. Google- the Denny Manufacturing Company- they sell all kinds of background materials at reasonable prices and their customer service is excellent.

The suggested lighing will create more dimension in your product shots and have the items seem to pop off the page or out of the screen online.