the same cream or jelly used with a diaphragm can also be used alone, they sometimes come with an applicator. I think KY makes a spermicide that comes with an applicator. Ortho sells pre-loaded applicators. There's another brand also, called encare, which is a "suppository".
I got fed up with hormonal methods (pill, patch, depo-provera) and barriers are just clumsy for me (condoms, diaphragm). We used FAM to conceive but the periodic abstinence to avoid pregnancy is just unrealistic for me. I've been very happy using spermicide, for many reasons. You can buy it at drugstores, grocery stores, etc. no prescription, professional fitting, or pap smear required. I have found it reliable enough, no unintended pregnancies.
Honestly, I wish you the best of luck with your VCF samples! Have fun!