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.
You can find lots of Barney party supplies here> http://cot.ag/moVnGb this is a great online party supply store! And u get a 10% discount when using the link above!
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 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 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
Check out Doolins if you are in the RIver West area. They have a great selection. There is also the standard Party City which always has a good assortment of party supplies as well.
Amazon and party supply outlets online. There are thousands upon thousands of pages of products for Barney. He's been a children's favorite for years now so supplies for him are easy to come across.
Rainbow Supplies does party favors. Find them at 2076 Logan Avenue, San Diego, CA‎ - (619) 230-0020‎