We all have friends that are crafty and working in different mediums, why not ask if you can borrow their favorite tool/supplies for the weekend.
Better yet, have a crafting party. Pull out your supplies/tools, invite a few friends to bring theirs, and then everyone will have an opportunity to try something new.
When you get the items use them in a variety of ways, experiment, work with lots of materials. It's a chance to step out of your box and really do something different.
I borrowed alcohol inks from a friend of mine and experimented with adding color to the washers. It was really cool, I might even buy myself a set now that I know how well they work on metal. Working with them gave me lots of ideas and you may see a few of them in my Etsy shop soon.
Borrowing tools or techniques is a simple way to experiment with new materials, and give yourself a fresh infusion of inspiration.
Have you borrowed tool/supplies/techniques from a friend, and discovered a new idea?