Super Mario Maker released today with a patch available to remove the item-unlock delay.
There has been a lot of commentary on the nine day, five minutes a day regimen required to unlock all of the items and it seems that Nintendo listened. There aren’t any details on exactly what the requirements are to unlock everything. Players say the unlocked content becomes available if you wait between fifteen minutes and two hours. There are suggestions that placing a lot of the base items, such as blocks, will unlock content after a short wait.