Stay home and hang out in the park with the dogs for an afternoon. So long as you are otherwise professionally active, not using this "opportunity" should not be a problem. There will be plenty of other opportunities to network, and that trip will obviously be much more productive if you are actually presenting your work. I know, the money is there . . . but no administrator is going to frown at your decision not to use it right now.
It's "use it or lose it" funding, unfortunately. Fortunately, it sounds like funding to attend conferences will be available again in the future. I may look a bit more to see if there's anything plausible in the two cities where my college friends live, but my motivation to travel is fairly low right now... even to travel as far as the dog park!