At most non formal and younger age group functions the "Request By Text" feature is a good idea, whereby people request their tracks by text message. Obviously it usually only works with the younger generation who spend most of the night texting their mates anyway!, but the philosophy behind it, means that when the guest's go away at the end of the night, most will take your contact number with them

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A collague of mine spends a great deal of money on "Gifts and novelties" with his details on, here are some of his current idea's:-
Beer Mats - Not as daft as it sounds. Most village halls do not have these in place, and the majority of mobile bars don't go to the expense of taking them with them, at least not around here!. Before anybody arrives, put them in place - often 4 - 6 per table. He prints them with "Tonights Entertainment provided by...." then all of his contact details etc. They look very effective and literally under everybodies nose all night. Neither are they as expensive as you may think. He has them printed on stiff card and laminated, so they can be cleaned and used again and again.
Book Matches - How many times have you been asked "Got a light Mate?" during a gig?, even if you are a non smoker Keep a supply of printed book matches, and just hand them over. Batches of 50 cost very little.
Request Slips - A must!, when you use them in conjunction with the beer mat idea you have 100% advertising in front of each punter. You get the best of both worlds, Request slips will be read, but often get handed back to you. Beer Mats stay put, unless the client takes them in order to get your details.
Clothing - I once had some printed T-Shirts and Baseball Caps done. One of the most expensive forms of advertising and again one that really only appeals to the younger generation. Maybe worth considering if you are doing a large outside event for the public. However, clothing for you and anyone associated with your show is quite inexpensive. Embroidered Polo shirts are quite effective and smart enough when worn with casual trousers for most non formal family events.
Business Cards - Mentioned before, and quite obvious. Ask if you can leave a small pile of these on the Bar during the function. Also pin these up on village hall notice boards, Leisure Centres, etc.
Balloons - Printed Balloons are quite inexpensive. Don't bother with helium types unless you have plenty to spend. Again the advantage of this is that you will find them going home (along with your details) with the younger guests at the end of the function.
Glowsticks - If you use these already - ever thought of having them overprinted with your details?
Leaflets:- Printed A4 / A3 leaflets are coming down in price all of the time!!. Have 500 - 2000 of these done professionally, and spend one Saturday in town handing them out to people

. Better Still, wait until there is a local carnival / event and go around the crowd handing them out.
Newsagents:- Can be your best friend!. If you know your local newsagent and have shopped there for years then why not use the leaflet idea, and ask them if it would be possible for their Paperboy(s) / Girl(s) to deliver your leaflet to every house they deliver the paper to. You may have to make a few "token" purchases but it is very effective advertising. If your Son / Daughter / Nephew / Niece etc has a paper round, then better still!
Christmas Cards:- Again professionally printed with your details. Keep a database on file of your clients from years gone by (You are keeping accounts anyway aren't you!

) then during December send them a Christmas Card!. It reminds them that you are still in business and also that they have to book that Wedding, Party, 40th etc in the New Year.
If you need any Leaflets / Business Cards / Labels / Letterheads printed then I can recommend JDH Labels Ltd on Tel / Fax (01260) 277272