Hi, Melanie!
It seems that the elusive sliders are harder and harder to come by. They used to be commonly issued with
MagicBands for annual passholders and
Disney Vacation Club members, however DVC hasn't issued them for a little while. You can still find those on eBay and other second hand markets if they are a must have for your kids.
Something we've recently discovered that my kids love are
MagicBandits. If you've ever worn Crocs, you may be familiar with the Jibbitz that you could insert into the holes of the Crocs clogs. The MagicBandits work in the same way. You can put them into the extra holes on the MagicBand to decorate them with your kids favorite character, theme park icon, or even just a little bling. Aside from being available at shopDisney, you can also find them at various locations at
Walt Disney World.
If sliders are the way to go, and they don't have to be DVC or Annual Pass specific, you might still be able to find ones on Amazon. There are some themed sliders there as well.
I hope you find what you're looking for!
Anna