This should be a wake-up call to a lot of us old farts:
Go through your **** and sell it for a reasonable buck now instead of leaving it for your (often uncaring and unknowledgeable) relatives to either trash or sell for a fraction of its value.
There is also a reality to face ... the people who'll want this old **** are dwindling in numbers AND the economy is so unstable that those willing to spend money are also dwindling in numbers.
A case in point I'd like to make is the Hot Wheels craze. Its been going on for a long time. The old Redlines are valuable BUT in most cases collectors want to sell collections as a whole whereas buyers want individual pieces to fill holes. Collections are VERY difficult to get a reasonable buck for. Furthermore the trends have changed DRASTICALLY over the past twenty years. Twenty years ago people were still collecting hot rods, customs, etc.. These days its all JDM, tuners, supercars, etc.. If you bought a rare or limited edition model 20 years ago for $30 or $40 you can't get $5 for it today.
Get rid of your **** and spend the money on your grandkids !!