I have several, many, too many wargaming projects on the go at any one time. I run a system whereby the next project to surface in my in-tray gets one hour of my time until it is ready for a game, when it is entitled to a full day.
The problem with this system is that I order stuff on the internet, recycle the project to the bottom of the in-tray, and carry on. When the required items are delivered I place them aside and wait for the project to re-emerge.
In the meantime, the physical manifestation of the ordered goods vanishes, never to be found again. I forget that I have got it and order it again. That’s why my loft is full of stuff in boxes, obscuring the stuff I need now!
Am I alone?
General Whiskers' semi-historical wanderings 
I feel your pain! I had to stop when I started buying books I already ha Do!
Yep! Been there and got the T-shirt!
You need to put all your project in a box and label the outside with the project is. Allows to sort it out nicely. You simply stacked the labeled box in a corner until needed.
Nice idea. Having spent half the afternoon in the loft looking at labelled boxes without finding the plastic bases that I know exist, I just ordered some more…
YesthatPhil and Trebian are much more disciplined as befit a retired production manager/art historian and a semi-retired treasury manager/historian. Each to their own though! I buy stuff, half paint it, then spend the next 3 years moving it between boxes!
Regards, Chris.