The most important piece of equipment to get for clinical/lab is a stethoscope. It is worth investing in a good quality stethoscope. (The Littmann Classic III is a common one.) You may also choose to get a penlight, however, there are often penlights on the clinical placement units. You will also likely want to get a manual blood pressure cuff (sphygmomanometer). The cheapest one you can find will do as you won’t be using it a lot.