I tend to do outcalls wherever possible, but for incalls generally travel reasonably light.
I always pack the following:
Phone (neither have/need a special punting phone)
Cash (in a perfume scented envelope embossed with "Quesadilla" of course
)
Spare condoms (since a WG once arrived without - oops!)
Levitra / Viagra / Cialis - taken about 30-40 minutes before arrival
Bottled water (the above can make me dehydrated)
Chewing gum to ensure fresh breath (not to be confused with the condoms...)
Energy gels (for longer punts - 2 hours or more as I don't like to eat anything solid for 2-3 hrs before a punt, usually one consumed about 10-15 mins before arrival and washed down with the bottled water and one after about 2 hours or for recovery afterwards)
I appreciate the energy gel probably sounds completely nuts to most but as a (very amateur) triathlete it's served me in good stead for 3-4 hour triathlons in terms of keeping my energy levels up without needing to use the bathroom mid-flow. My punts to tend to be a bit of a workout and if I'm not exhausted by the end I'm doing something wrong :-)
There are occasions that warrant an additional "goodie bag".
1) Filming - I bring my camera and tripod which I just setup and leave on record in a corner, plus my
External Link/Members Only. I have not yet been geeky enough to try and wear it (no doubt would result in hysterical laughter from the WG which is hardly conducive to a good punt), but it's very portable for those up-close gonzo shots of BJ's etc.
2) For DP sessions - I bring my mate Lou in a wheelie suitcase! That's
External Link/Members Only - my inflatable fucking machine. Only takes 5-10 minutes to assemble/inflate. I've only done this twice, but it was well worth the effort.
Only on one occasion have I brought all of the above! Great punt!! :-)
This is why I prefer outcalls...much less to pack.