Not expensive to capture images close up by using close up filters. These filters come in different strengths and act a magnifying glass. My set include +1, +2, +4 and +10. They just screw into the front of the camera lens and away you go. Use autofocus with the bleep on and move lens towards the subject until no bleep then pull back to the last bleep and away you go. You can also stack the filters so that the magnification is higher. The set cost me around £10, but that was a few years ago. Prices are a little higher now, but they come with a few extras.
Set of filters from Amazon
Very impressed with results and will continue using these until I save up to buy a decent Nikon Macro Lens.