Free and Open Source Software

Do you know of any software that helps with check lists for activities. I'm thinking of something that reminds me everything I need to grab before going fishing, for example.

Ideally, you'd have templates for your activities saved. Then, when you're about to start one of those activities, you'd create a new 'instance' that would automatically give you the check-list for that one time.

I've been looking for a while, but in a sea of productivity apps I couldn't find anything like this.