What Do You Do With Blank Spots In Your Dansco Albums?

What I do is I take common, UNC examples of the series in question and place them reverse first. This also goes for holes where I've got the coin in a slab or the OGP and don't feel like removing it.

I tend to put in interesting or similar coins in the blank spots. (proof's, errors, nice condition stuff.)

I like showing the reverse of the coin. The copper mint mark tokens from
uncirculated sets fit in cent holes and act as fillers. The older, large
plastic discs from mint sets, even though they don't fit exactly, can go
in some empty holes.

In the Ike dollar album, the early 1990s Ike commem dollars (proof and unc)
are a perfect fit. There is also a recent Generals commem dollar with Ike
on it, and that one in proof and unc will fill the 4 holes.

In my wheat album I have some of my older wheat cents,ex 1922, that I have doubles of to keep them safe until I figure out something else. Thought of putting a proof, a double die, and some other error in the holes but don't have any of them yet in my collection.

For my Lincoln album, I use mint tokens as others have indicated above.

ONE of the reasons I stay with Whitman. No empty slots. Never could figure out why Dansco can't figure out how many coins it takes to make an Album full. Some have lots of those. Whitman has none.

I will occasionally add a coin that is special to me. Could be a attractive tone, a low mintage year, a variety, or just one more really nice example. Can't say I do that all the time though, most remain empty. I have some Whitman albums and although they provide the exact number, I have found that they cover fewer varieties and I end up wishing for the extra spaces.

I don't seem to have any problem with the extra holes.
And I have a lot of albums.

But if I do see something interesting to fill them with,
I have no problem with that too, what better way to use a
set of colorized westward journey nickels than at the end of a Indian head / Buffalo nickel page.