^Just make them better and sturdier, with a way for the lube to come out when squeezed or something. We put a man on the moon, we can surely invent lube glowsticks that are durable enough to not break into shards.
(me =Kanao my girlfriend=nezuko)1st drawing: when my and my girlfriend started dating
2nd drawing: my girlfriend 2 months into us dating (please tell me if that joke was funny (´・ω・`))