Its actually a cool job. And this is before you get burnt so enjoy it and the optimism your question contains.
In a small company anything that plugs in means you are a bitch. Get some fucking standards, boy. Don't touch the cellphones, pdas and certainly anything that is not company property.
This is your problem and close out everything else and read this.
You must accomplish something. Not the stuff on the lists, something you can take with you otherwise you are wasting your time. All these change orders whether from a skirt or tie can do is fuck you and prevent you from accomplishing projects. This causes a very typical asocialization and detachment of IT people though with a simple extension of context, it can be remedied. Its not worth finding out the hard way like most people do after getting screwed that everyone involved needs a plan and needs structure. Your evaluations will be SHIT at the end of the year and will continue to be SHIT not because you are not valuable trustworthy or smart, but the big picture things never get done or maybe its the proposals. All the change orders and short term requests that you at the terminus can't manage - this is the futility of your question - will keep you from accomplishing anything.
Adding software to ENHANCE THE ENCODING OF YOUR OBLIGATIONS is the LAST thing you want right now in this flexible environment. Its fun to be useful and some personality types need it like smoking a cigarette. And others will exploit this till your ears produce hairs.
What you need to do is figure out how to get a raise or how to get a much better job and for this you need cred. Being a bitch will never move you forward. The list of things you succeed and fail at in your job - this should come from your supervisor, or you make them together. If they are not agreed upon, that is disadvantaged position. At review you are wide open to get hit with demerits and if you don't have all that and more to prove what the f^%$ random stuff you have been doing, you get talked out of a raise.
So the issue is not what goes on the list - if you are smart you will put everything on the list, but who has control and what momentum you can build with your accomplishments.
Some additional advice is to either work through a supervisor who mediates work requests, or always have a team setup to plan long term objectives. Doing something long term for one person can cause consistent collisions. And make sure all your work and role is throughly advertized to every person in the organization. If they don't do it, then bring it up in every conversation. If someone tells you not to, alarms go off and you are designed to get screwed. For example, being hired in the middle of a system civil war.
You individually, morally, have to be ready to accept big responsibilities and set aside being a bitch. And if you will make that shift and take on riskier projects that require more investment and 'ownership' of the project then be damn well sure there is a reward involved.
The question of how you manage that stuff is not in a tool, it should come from your ego. Don't get involved with small time shit unless she is really cute, or it is really worth your while. Be studied, have prepared responses to common questions and have some dignity. Its not an accident you know answers to questions and have talent to solve problems.
It might seem cute at first that anyone in the office can bring you a problem. But can you bring a problem to anyone else? Why is that? The degree of bitch in your equilibrium with these order generators is inversely proportional to your individual gain. It means you don't exist yet because your bitch to everyone means you are spread out in the social space and proximal and equidistant to everyone. Your objective as a sapient and sentient being is always to improve your standing in this network. So your first move is to create some space and occupy that space and make the path to you assymmetric. How? Pick your topology. First come first served? Make an entry in a logbook? First him then her? Does rank matter? It does in an 'agency'.
How devious are you? As a salaried person, if you make a system than funnels all requests and backs them up into next year you might as well evolve into pizza the hut because who even cares? You can pay rent, buy pizza and play WOW.
If you are devious you could talk the firm, agency, institution into not being your boss, but they being your client. Kind of a switcheroo and then they don't have to pay benefits or anything and each request gets payed an hourly rate until its completed. Then you the wolf, must play this game like chess in advance and give them concessions all for the purpose of setting a decent rate. Then rail them. Clean their clock so to speak. You can now make money in the middle of the night if you want to. Be efficient and work that log clean and give them heart palpitations when they get the invoice and make them go DAMN. You better believe they get their shit in order before they enter a request because now, as they should, they do so with complete comprehension of the price, which is now almost efficient.