Maybe keeping also the wallets for some (PoS?) altcoins could help.
Also you could research about masternodes.
But yeah, this is altcoins in which you have to invest first and I can't tell if the investment will worth it over time.
Thanks for the suggestion. I was thinking about this previously as well … But actually I don't like the idea to invest a decent amount of
BTC to get a stake for a PoS node. E. g. DASH requires a stake worth 12
BTC at current exchange rate. If price gets dumped, I might ending up halving (or even more) my stake in
BTC. Too much risk for me. :-)