I had that size the other day. Luckily the bugger wasn't moving much until I also put in the pint glass and it was running around fast, so despite it being trapped, I was still on tender hooks! This spider was lucky as I freed it into the garden.
One other spider I had in the kitchen wasn't so lucky. I put the spider into an empty jam jar and put the lid on. So, I thought to myself what can I do with this spider. I know I will violently shake the jar so it confuses the spider! (as if!)
Then I thought, why do that. Let's give it a different surrounding. So I filled the jam jar up a little bit of water, probably only quarter of the way full. Within two days, it died from drowning. Silly bugger, shouldn't of gone near water!
Finally the most worrying statistic that I once heard was that at least 8 spiders will enter into your mouth whilst your asleep...per year!