For just a few sliders you could use the trick of setting their properties to Init=true, so they are persistent between patch save/loads and also send out their values when the patch loads.

Another simple way is to rig a message box to store some values with the 'set' message, then use [loadbang] and [route] to restore them to objects/guis.

For a bank of sliders, radio buttons, toggles, etc. -- anything which sends numeric data -- you can also store the values into an array the contents of which are saved with the patch ([table] won't work for this). Each slider/etc. writes to a given index in the array and can easily be retrieved upon [loadbang].

Matt