Allowing low-risk detainees to wear their own clothing or other non-penal attire.
Oh merciful GOD! Give them bologna sandwiches and water 3X a day, limit their "stay" to a maximum of three days before shipping them back and there is no need for them to even have to have a uniform to wear.
Oh and in addition put revolving turnstiles at all those illegal corridors we’ve been seeing where the trash from their crossings is a foot high.