Been doing a bit of searching but can't seem to find a decent bit of kit

I'm looking for a burley cage that I can load up with some solid pieces of burley...cray heads, strip bait, crab shells etc and then once it hits the bottom I can release it.
 Fishing sub10m isn't an issue, it's when anchored up in 20-35m of water and wanting to send some burley to the bottom. 

does anyone have something they've bought or a tip on how to make something?

cheers