What are your tips to make traveling by land (with own car) easier and convenient with toddlers with you and no nanny?

Kapag long travel, I have 5-6 toys sa bag. Hindi ko sila ilalabas lahat. Paisa-isa muna. Kapag ayaw na sa 1st toy, itatago ko na ito then labas si 2nd toy. Hanggang sa malaro nya yung 5th toy. Tapos balik ulit kami sa 1st toy. We also sing action songs. Tapos nakaready din yung snacks nya in case magutom.