When Is It Time To Let Go?

How long do you keep your Christmas cards on display?For that matter, how long do you keep the presents displayed under your tree?  How long do you keep your decorations up? What about your tree...when do you take it down and pack everything away until the next year?  I'm curious.  I'm a minimalist myself, so everything gets taken down December 26th.  I know that may sound cruel, but I tell my friends ahead of time not to bother with cards because they're just going to get thrown out.