Here's another idea I had recently for my Filofax: adding pages for future years beyond what are currently available in print.
Here's an example: This month my family and I are getting shedloads of vaccines before we move to Indonesia. In addition to recording what vaccines we receive in my Medical Journal Filofax (which I wrote about here), I will also create annual "ticklers" (for those of you who are familiar with tickler files) in my main Filofax for things that need to be boosted in future years.
Here's the specifics: This month my kids got vaccines that are due for boosters 3 years from now. In May my daughter is due for another vaccine that will need boosted after 3 years, and my son will be due for the same vaccine in September. So I will write a page with "2014" at the top, and down the page I'll write, "February: D & S Rabies vacc booster," "May: D typhoid booster," "September: S typhoid booster." As the year approaches and more events need to be recorded, I'll fill them in.
Similarly, some of the vaccines they've gotten this month need to be boosted in 5 years. And, other vaccs need to be boosted in 10 years.
I'll write a page per year for the next 10 years and fill in what needs to happen each year in which month. I'll keep these years sequentially in my Diary section of my Filofax. Then when those years' calendar pages are available, I'll buy them and fill in the dates as appropriate.
Someone had the very good recommendation recently that I get a fold-out 4 year calendar, but I don't need that daily level of detail. A page per year for the upcoming 10 years will work well for me, and as each year approaches I'll already know what needs to happen in that year.
Does anyone else do far-future planning in your Filofax?