We are trying to use only one plasmid with an inducible Cas9 element for our CRISPR experiments and we would like to introduce both the sgRNA and the donor template as oligonucleotides. We would be doing this through lipofection.
Depending on the working model system one can deliver the sgRNAs as oligos directly into the cell. Micro-injection has been successfully, or for better results synthesize sgRNA and the deliver sgRNA in RNA form using any efficient RNA transfection reagent.