Bob Eberle created a idea-generating checklist to help get you started on a project, it's called SCAMPER.
Here is what it means:
Substitute something -try other materials, processes, or technique.
Combine it with something else - new assortment, materials, or tools.
Adapt something to it - what can be adapted from a new technique.
Modify or magnify it - can it be made larger, extended, or exaggerated.
Put it to some other use - what else can be made with it?
Eliminate something - how can you streamline or compact it?
Reverse or rearrange it - try a new pattern, layout, or order.
To get started isolate your challenge or the object you are working with. Ask the SCAMPER questions for each step of your project and see what new ideas emerge.
This is a great technique to kick start a new or stalled project or when you want to work with a new material.
Do you have special techniques that you use to get inspired when you are stuck on a project?