Here are some links to companies that provide playground equipment.
A to Z Playgrounds http://www.world-playground.com/AtoZ/index.html
OUT BACK PLAY CENTERS, INC. http://www.world-playground.com/Creativew/index.html
Little Tikes http://www.littletikescommercial.com/
Recreation Creations http://www.world-playground.com/recreation/index.htm
Recreation Dynamics http://www.world-playground.com/Recdynamics/index.html
Game Time http://www.gametime.com/
Landscape structures GCS haves some of these pieces http://www.playlsi.com/
Miracle recreations http://www.miracle-recreation.com/
Goric GCS's newest playground structures have come from this company http://www.goric.com/
Burpee Seller of specialty seeds and gardening accessories. http://www.burpee.com/
Nature Hills Tree suppliers Spread is the diameter of the tree http://www.naturehills.com/
Regualtion Basketball Court Size http://www.basketball-goals.com/basketball%20court%20dimensions.htm
Soccer Field Dimensions http://www.about-soccer.com/soccer-game.shtml
Volleyball Court Dimensions http://www.volleyball.org/court.html
garden water fountains http://www.kineticfountains.com/garden-fountains.asp
Baseball Field dimensions http://www.hsbaseballweb.com/field_dimensions.htm
calculate how much asphalt- black top- you need for your playground. PIKE Industries Asphalt Calculator