You can find Sesame Street party supplies in San Diego at San Diego Kids Party Rentals. They have large bouncehouses you can rent too. http://www.sandiegokidspartyrentals.com/sesame-street-toddler-parties-Elmo-bounce_house-rentals-San_Diego.html
You can find Sesame Street party supplies online at many stores. First, you can try amazon.com, ebay.com, partycity.com, and other party supply stores.
You can find themed party supplies in San Diego at any Party City, there are quite a few of them in your area and they have a great selection and good prices.
You can find party supplies for children in many stores in and around San Diego. A few stores are Party City, Party Adventures, the malls, and store chains.
At a paper party supplies store of course. I am sure Sand Diego has many paper party supply stores.
Yes, Party City does sell diego themed party supplies. They have a full set of them and you can find them here: http://www.partycity.com/product/go+diego+go+party+supplies.do
Pokemon party supplies can be easily located at many retailers such as walmart and target
You can order Diego party supplies on line either through the disney dot com web page. you can also use amazon dot com or ebay dot com for custom party supplies.
Looking directly in San Diego for party supplies you would want to find the local stores in that area. Party City located at, 8330 Rio San Diego Drive, San Diego, CA. Rainbow Supplies, 2076 Logan Avenue, San Diego, CA they specialize in pinatas. Toys R Us, 1240 West Morena Boulevard, San Diego, CA
Rainbow Supplies does party favors. Find them at 2076 Logan Avenue, San Diego, CA‎ - (619) 230-0020‎
party city, party america, and party pro are a few places to name when it comes to looking for the supplies. A lot of these places seem to have the word party in them.
The best place for any type of party supplies is Party City. You can also find a good selection at Toys R Us and Oriental Trading. Shop around for the best prices.
At this site: http://www.thecityofsandiego.com/party/, they will help to plan and have great ideas for planning and executing a horse party in San Diego. This site has many ideas and outlets for planning the perfect party.