I can negotiate to contribute skills and use supplies for:

Basic IT (Office functionality and machine up-cycling),
If you bring a USB you may borrow from my library. If you bring me an unsupported device, I may see if it can be put functional with Libre and Open Source software.
I like to help my neighbors with little troubleshooting things when I have the time and headspace (preferably over XMPP chat)

Kitchen: Yes you may have a sample from my Yeast Start, Kombucha Scobi, or Yogurt starter, if they are well and healthy.
I also trade houseplant starts and seeds. Lists coming with the seasons.
I take spotty tree fruit for cleaning-vinegar by appointment. Contact for appointment, batch size, and barter portion.
Williing to coordinate group-batching for oil infusions (try my lemon-thyme olive oil with a fresh dry bread!)

Fiber arts:
I can crochet at an intermediate level and always need more natural yarn. I am learning to spin it myself from plant an animal fibers, but still need a lot of practice.
Weaving at home is still in the future for me but I would like to learn and help.

(I'm probably going to edit this a few times to touch it up and make it look nicer.)