Regular Recycler is a simple script to scan all of the trash folders it can and delete older files. Set it up with LazyCron to run it on a regular schedule and keep the trash folders clear of older files so they don't take up too much space.
Specify the number of days for files to be deleted:
./RegularRecycler.py --age <file age in days>
You can also set more strict requirements for larger files:
./RegularRecycler.py --largeage <file age in days>
By default, it will simply print each file that would be deleted.
To actually delete them, run it with the --destroy option.
Get help by typing ./RegularRecycler.py -h for a full list of options.