<human>: Can you succinctly summarize the text in 1-3 sentences?

So I have this friend, let's call him Gavin, who is in fact, rich. It's come to the time of year for me where I'm having to look at universities. Which means open days. In far away places. With pricey, pricey train tickets. Now, I wouldn't say we're poor, but we're not the exactly well off. Mum and I were worrying about where the money will come from to get me there. I mention this to Gavin and next thing I know I have £100 to get us places, which has put my mum's worrying mind to rest. Not only that, but he says we don't have to pay it back because it's an 'investment in my future'. We want to do something nice as a thank you - but what? What can you give the guy who, quite frankly, has everything?
<bot>: Rich friend gave me £100 to help me out getting to universities I need to look at. Says I don't need to pay him back and I want to say thank you. Any ideas on how?