I'm a big fan of 1/2 clips, aka mini clips, aka toe clips modified & used w/o straps. easy on, easy off but you still get some foot retention, beyond what knobbed flat MTB pedals provide. you can make your own or buy them off the shelf. I have size 13 US feet so finding the right size was my challenge. I use them on road bikes, hybrids & MTBs
however, I'm currently using cleated pedals/shoes on the road bike & knobbed flats on the hybrid & MTB. an experimental phase