This is in rough draft form, so forgive the stream of conciousness format!
This time it's making torches, either for sale or for personal use. I'm thinking maybe you roll a DC 15 check, with the GM randomly determining if it's a INT or WIZ check to find or dig up a pool of bubbling tar.
Once you've found one the GM randomly determines if you use INT, DEX or WIZ to make it. Ie, if you're figuring out the technical details - or if you're just juggling the components into place - or if it's a matter of working with what you have into a synergous whole.
Roll a nat one and you fail and the pool has been used up (whether that's forever or a few weeks is up to the GM)
These tasks assume this is not the end of the world stuff - your character is not pushing themselves to the limit, because frankly that's a sucky way to live. So you can make two attempts at torch making a day.
Must figure out a way of fitting various tasks with each other.
Also write them all up in a set format as well.