Someone I vaguely know made the recommendation in print that, if you lost your job, get something at Starbucks the next day. Don't really agree but the one time I lost my job, I did start doing regular professional job hunting the next day which materialized in fairly short order through my network. Had that not worked out, I'd probably have done something survivable absent any particular severance package.
It was sort of a dismal time in tech in general (dot-bomb) so I wouldn't have just taken a couple months to travel even if I could have afforded to do so.