My guess is
- a 'conspicuous' Portrait at the X-Mansion/Stark Tower Lobby in the films with an excuse to use those sets...
- Picture on Newspaper Props
past Cameo's have established at least some of the 'Stans' as Larry King/Hugh Hefner expies (if not the Them within the MCU) so Ads for their in-Universe
products could cover a film or two
and Guardians 2 established some of them as 'The Watcher' if I recall, so they might work in a 'canon' feature of the watcher to tag a spiritual successor
not to mention Having twice? done his Cameo with Ferrigno, maybe Lou will assume the role for future films
