Depends on what you plan to do with it long term I think. If you have no plans to make it commercially viable, then I agree with the other poster who recommends using it as blocks friendly for ToR exit node operators and/or similar style services (e.g. public nitter instance). You could delegate /24's as-needed for individual sites. Exit node operators tend to be technically clueful, so they will understand what will need to be done to make this work.

However, that will likely put that /22 on quite a number of blacklists out there for an indefinite period of time.

Other than honeypot stuff or more grey area things like botting/scanning having a zillion IPs really isn't super interesting unless you have customers for them, in my opinion.

If I were in your position I'd simply lease them out until I have a real use-case for the block. This can also carry reputational risks of course as well. IPXO is a market I've used in the past to accomplish this, although others do exist.

I do think having a block of IPv4 and an ASN is definitely a nice strategic asset to keep around if at all financially viable to do so. The cost of ARIN/RIPE registration isn't crazy, but is more than an individual would typically want to carry. Leasing out your unused strategic asset to at least pay for itself until you might need it seems prudent to me.