1- Offering a one-time cash or asset dividend to existing shareholders base on either liquidity of an active position, or simply a share dividend.
2- Investors Relation / updated website, Social media presence.
3- Detailed corporate update identifying previous & upcoming execution.
4- Complete refresh of the board of management.
5- Calculated NAV every Q.
6- Or just roll that back privately and list it back in 2 years from now under a different name/management =)