I have a handful of 20 minute-ish strava climbs nearby that I like to do several times a year as performance benchmarks. Also a few big local routes, mostly just training to survive them motivates! 5 hour century is on my list for the yea as well. For events that are canceled Ive tried to create a similar event or even ride the same route on the same date. You may be able to get a friend, spouse, or friends spouse to sag along the course or at least set up a water stop for one of your own DIY events.
Many people are talking about consistency and I think they are right. The best events are the ones that make you want to ride or train. If creating a route with a few new roads to explore of RidewithGPS motivates you to get out on cold weekend, then perfect!