Lemon:

For my lemon I first took a sphere, slightly stretched it, and then sculpted it into a lemon shape.

I decided that it looked too simple with just the fruit, so I decided that I would add a leaf and stem as well.

I used a rectangle and molded it to look more natural, and gave it a slight bend at the top for the same reason.

Then I used a UV sphere for the leaf, and sculpted it into a leaf shape, and then flattened it to make the leaf.

The leaf looked a bit odd with just the stem, so I copied the stem's mesh and made it much smaller to act as a small leaf stem.

Table:

The process for my table was much simpler than for my lemon.

I took a rectangle and scaled it to how tall I wanted the table, and then copied it four times to make the legs.

I added the top rectangle for the table top, and then I was done.