Weddingbee boards

If you want to keep them from slipping they sell a waxy puddy at the craft stores that's supposed to anchor taper candels in holders so they won't fall over. I don't see why you couldn't use a cheaper block of modeling clay to do the same thing with votives or tea lights. I also have seen that sticky puddy tuff used for sticking posters to walls has the consistancy of chewing gum at the $ store. If you're wanting something decorative I've seen the glass marbles or pebbles used, sand, coffee beans, other dried beans like pintos or lentels, rice, salt, rocks for fish tanks, could also float tea lights in a little bit of colored water, could probably use sugar even (color it yourself with a little food coloring and spread it out to dry before dumping a little in the bottom of the jar). Oh or small candies: red hots, jaw brakers, candy corn... Just make sure if you're using votives with out a cup that you don't use the flamable stuff. I think you could use the flamable stuff with tealights in the cups as long as it didn't reach over the rims of the candels. Oh and cranberries or comquats (sp?) if you're using a larger jar. Could do a jar inside a jar too I guess if you had larger candles, then you could put pine cones, or that fun irridesent gift wrapping grass, among, other things in the bigger jar around the smaller one, and the smaller jar would protect the candle and flame. And then there's alwasy Epsom salt you can buy in cartons at the $ store too and use after the wedding for baths. Here's a few visuals:

http://theinspiredroom.net/2008/09/25/the-most-simple-party-decorating-idea-ever/