Rather than put completed models and figures into boxes, or line them up on shelves, I'm recently (2024+) trying to design displays or dioramas where they can be displayed to make best use of them.
I've completed a small number of displays so far, though the actual figures and models that are due to go on them are also in various states of completion!
Dwarven mine scene - This displays all of my Rackham 'Dwarves of Tir-Na-Bor' figures I have collected and painted.
Eldar Forest Display - This is to display some of my old and new Warhammer 40K Eldar figures which I decided to paint after 20+ years…
Ophidian desert scene - This displays all of my Rackham 'Ophidian Alliance' figures I have collected and painted.
The Fantasy Ruins display is to display my Rackham 'Griffins' figures I have collected and painted. Not yet started, but will be a smaller, half-width scenery tile much like the Fantasy Desert scene.
Dirz sewer scene - This display is essentially complete, minus the few remaining Rackham 'Scorpions of Dirz' figures I have collected and painted. The display itself is designed to be modular and re-configurable in layout.
Space Marines defending against invading Chaos Marines - This display has a small force of Dark Angel Marines defending against a horde of Nurgle Chaos Marines and daemons.
WW2 German Airfield display - This is a display being planned to accommodate a small number of 1/72 scale German fighter planes and ground staff.
WW2 French countryside ambush - This is a display being planned of Allied forces ambushing a German armoured column in the French countryside during WWII. Figures and models are 1:72 scale, so slightly smaller than most of my usual displays.