Getting older and lazy, I try to cut down the amount of transplanting that I will need to do.
Now, as it warms up, I switch to direct sowing either in containers or in the ground.
Both of these need protection from critters, and also moisture retention.
I use large clear plastic bags over containers, and "hot caps" type protectors over in ground sowings.
The bags are vented by cutting the corners off, and the protectors came vented.
Sometimes I use milk jugs as protectors by cutting the bottom off, and placing them over a stick to keep them from blowing away.