Swapping maggots for magnetspublished at 16:57 British Summer Time 11 June 2018
Have you heard of magnet fishing?
It involves using a strong magnet to pick metal up from riverbeds.
The Sleaford Magnet Fishing Group, external go out regularly and find lots of things including scrap metal, a padlock and even a meat cleaver.
Members of the group say it's a good way to get out the house, have some fun, and help clean up the waterways.