Don Jones (DG Jones on the forum) drops by my place from time to time to talk trains and look at the layout. Several vists ago he suggested some swing out shelves below my layout edge to add extra storage for rolling stock, cabooses, etc.. I finished the first eight feet of them today and that are wonderful! There were already shelves behind these shelves, so these swing out to provide access to stuff on the shelves behind them.
Don made one suggestion I was unable to use even though it made a lot of sense. These shelves would be a bit more useable/have less wasted space if they were one long eight-foot section rather than three sections of two, two, and four feet respectively. However, I have only 28 inches of aisle space for the shelves to swing out into, and an eight-foot shelf would not have swung out enough to provide access to much of what was behind it. This two-footer does nicely, however.
However, I have the one four-foot section which swings out into the workshop door so it will open nearly 90 degrees.
Alas, all 48 feet of these new shelves - as well as the other 26 feet I made the other day, will be full by sundown. But I'm getting there.