In the first few days, a new employee may also be a bit nervous. If they are first time employees like trainees, even communication could be a problem. Hence, your sole aim should be to put them at ease, instead of creating an embarassing moment for them, in the name of innovation... In the name of innovation, it is possible you may even miss out important activities lined up, such as briefing on companies various policies, dress codes, procedures, DOs, DONTs, etc. So please be clear, as our friends have pointed out above, what you want to achieve ultimately !
Best wishes