A tool, no larger than your standard hot glue gun, that uses a small-scale converter, to produce an adhesive. Powered by solar energy, the tools integrated converter uses the glucose found in plants, to yield a useable adhesive. The adhesive is ready for application within minutes.
Possible applications would include: wound closure, patching of punctures in objects, securing or fastening objects, building, DIY projects, etc. All of which can be done anywhere you have access to plant-life and sunlight.
Benefits would include: efficiency, an almost limitless supply of fuel/supply resource (which could be useful when you run out of tape), ease-of-use, etc.
Although the project would call for research, in-depth design, and a team of think tanks, it could lead to the discovery/creation of many other ideas.
If this could be manufactured at low cost, it could be sold at low cost, simply to cover operating costs. Ultimately it would be donated in mass to improve lives globally.