where can I find cheap, vintage clip on earrings that are fun? or flatback bead clusters??

I love the old styles of earrings they used to wear and my mother in law is actually a collector of vintage jewelry. I happen to be going to an insane flea market in Connecticut this weekend where they sell such items and I wish I could stick you in my pocket to see the collections they sell! It's ok though because I do know other places to go and one of them is blujay! They have the Large Vintage Blue Beaded Cluster Earrings! Featuring: Sugar Beads with smaller blue,plastic beads surrounding them. All wired backs. Size is 1".  Marked Hong Kong.

Only $4.99! I also added other great choices below to help you get that vintage look you so desire! Enjoy!

There are some great styles in vintage, clip ons on Ebay. If you look thoroughly you will probably even snag a pair for really cheap. Sometimes they bundle them up in multiples.

The best place that I have found to find quality vintage jewelry is at http://www.etsy.com! 

These bead clusters are vintage clip ons and they are only $5 - http://www.etsy.com/view_listing.php?listing_id=16985211&ref=sr_list_6&&ga_search_query=vintage+clip+on+earings&ga_search_type=handmade&ga_page=&order=date_desc&includes[]=tags&includes[]=title

These are a little pricier but they are beautiful! They would be perfect for dressing up a nice outfit!
http://www.etsy.com/view_listing.php?listing_id=33056873&ref=sr_list_3&&ga_search_query=vintage+clip+on+earings&ga_search_type=handmade&ga_page=&order=date_desc&includes[]=tags&includes[]=title

I searched and found hundreds at affordable prices. Many that I have found are $5 and under! You can find many others on etsy here:

http://www.etsy.com/search_results.php?search_type=handmade&search_query=vintage+clip+earrings&order=price_asc&ship_to=&ref=related&page=1

Vintage earrings are so awesome!  What is so neat about them is they have become the style again and they add a certain look to your outfit!  One of my favorites is the Liz Claiborne New York beaded clip on earrings that I have pictured below.  They are at a great price of $17.50, but have that neat, vintage, yet casual look to them.  They are the clip on style and will be easy to coordinate with your outfits. 

For your browsing needs, I have found a perfect website.  http://www.thecliponearringstore.com/  They have nothing but clip on earrings galore!  They have so many different styles including the vintage look! 

There is also one more site that I found that was AWESOME.  http://vintagecostumejewels.com/Jewels/earrings.htm  They have many looks and more of the vintage look.  If you want to find some in store, try some antique stores and resale shops!  They should have a great selection and maybe at a great price.  Enjoy your antique earrings!!  They will look great!