If you are doing farm work, ask your host if there is a way of obtaining any hands-on time with cattle or pigs or whatever else you find interesting. Ask what how the stock are managed and why, think about everything from an animal health angle and also consider how stockman ship and animal health contribute to the economics of livestock production. Farmers are a big part of the veterinary client world so use the time to gain insight into their world.
Don't forget, the farm network is a good way of finding placements for future years.
EDIT: forgot to say, finding friendly farmer with routine work at busy periods may be a good way of earning money in the holidays later in your course- some people block calve all their animals in a tight window and someone with some veterinary expertise and understanding may be useful here.