Ideas/tips/tricks for sex in odd places?

So my hubby and I went camping this weekend with my parents and stayed in the same camper. It's my fertile week so we were trying to figure out how to still BD without everyone knowing. We ended up finding a handicap accessible bathroom that was separate from the others and had standing shower sex (for the first time). That worked well, but what are your tips and tricks for getting it on outside of the bedroom?