I am an independent software contractor for an IT company and a lead for a small team. All the team members are contractors as well and we're pretty friendly bunch. We go out sometimes for drinks or simply eat together but yesterday one of my colleagues brought me a bottle of whyskey when came back from a vacation. It costs somewhere around £35 (or $46) and I am not sure how should I behave.
Although I helped my colleague on many occasions, even with some tips how to be a contractor, I am bit puzzled with the situation. I am a team lead and if I accept this bottle is it ethical?
If it would be someone that I could consider a friend outside work I wouldn't have to think too much about it but in this situation I am a bit lost.