A DJ can be just what you need to liven up your next gathering. There are many out there to use as ling as you can find one that does the type of music that you want. Go through their song lists and make sure that they have the songs that you want to hear, and if not request that they do so before you use them. Many will accommodate.
A clown can be just what the doctor ordered to get your next function rolling. These people can put a smile on many people's faces with their antics and activities. Their whole goal is to make people laugh. So if you want to bring joy to your party, bring on the clowns.