Some member are yet to acquire focus pads and/or thai pads
Some members do not have boxing boots - they are better and cheaper than trainers and worth acquiring before your trainers wear out and you need a new pair of those for twice the cost
a groin guard should be worn under the gi at all times, put it on at the start of the session - it's not just for sparring, it's for newaza, CRA and kempo
PPE - if you don't have and still need shinpads and/or the karate forearm pads and mitts now is the time, or the karate all-in-one forearm-hand guard