ArtMinds pop-up
magnifier with LED light. I use it every day in the shop. Tucks nicely in apron and pouch pocket, very durable (I've dropped it many times), original batteries after several years.
Hose garage on my CT Midi. I had a CT22 without one for years before recently replacing it with the Midi and never realized the convenience of the hose garage. Worth adding if your existing vac doesn't have one IMHO.
PEC 100mm double square (add the 4" blade or a second square). Most settings I use fall within its range, easier to maneuver and manage when doing layout along edges and small pieces, love the convenience of storing it in my apron pocket. I actually bought two of the PEC 150mm/6" double squares (a new and blem) and plan on adding a second 100/4" square to avoid switching out the blades. It's just worth the convenience to have multiples for various settings when doing layout. Another advantage of having multiples is that you can save them at their locked settings, using the other one in case you overlook a piece or need to remake a part. Plus I wanted an excuse to add a weird tool holder to my tool cabinet
![Big Grin [big grin]](https://www.festoolownersgroup.com/Smileys/default/biggrin.gif)
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Pica-Dry mechanical pencil with colored accessory leads. It just works so well. Colored leads are great for darker woods.
Iwasaki flat extreme-fine cut
file. It leaves a surface finer than 220 grit. Quite useful when a hand plane or abrasive won't do.
Not a tool, but taking my apron to a local seamstress to have the pockets reconfigured, extra material in the front removed and pockets added. No apron I found has enough dividers in the top pocket. Best money I spent in the shop this year.