My bottle 'sun' or 'star', depending on what 
time of day it is...zone 4 garden, no breakage problems, buried in sand.
 Recycled wine, beer, and liquor bottles:) 
                    
                        
                            Time: 2 Hours
                            
                            Difficulty: Easy
                        
                            
                                 Bottle 'sun' in my gazebo in the center
 of my veggie garden.  Zone 4, no breakage...has been buried for a 
couple of years.  Old grind stone in the center. 
                            
                            
                                 First I chose the spot in the center of
 the new garden.  I laid out the 'point', then dug  the bottle in upside
 down...whole.  I had an old grindstone that I used for the center. I 
used a post hole digger, shovel, and rubber mallet. 
                            
                            
                                 The bottles all buried...you can easily
 make adjustments in the sandy soil.  I used a 2" by 4" and a level to 
get the bottles aligned to the same height. 
                            
                            
                                 I filled with sand to bring the ground 
level up to where I wanted it...just and inch or so from the top of the 
bottles. 
                            
                            
                                 I spread pea gravel on top to finish the sun off. 
                            
                            
                                 This summer I added a 'door mat'! 
                            
                            