Including Tips of cheap ways to do it. Kinda my best dave letterman top ten list stlye
1: Overcrowded farm ponds have lots of very small panfish.
Normally I can get a dozen very small panfish in twenty minutes with a 1/64 ounce jig. Still the best baits for pole and line will always be locally grown fish where you are going. printman31 got that right on,
2:Goldfish at the petstore are legal here and rather cheap as long as you don't get the funky looking ones. I don't do this myself to expensive.
3:Grow your own nightcrawlers Well just go ahead and pick them up off the sidewalk when it rains. (justwanna no it will still cost you a small cooler or a coffee can So save up or have a BYOB party and a cooler normally gets left behind.
4: Make friends with someone in a nice place to eat. We get shrimp raw for free a couple times a spring/summer when they are doing specials or something gets left to long to cook. Normally a fancier resturant has more expensive tastes and wallets and you get the better class of Nasty catfish bait. Liver patte rocks! Normally you need to get to know the cook to get the good bad stuff.
5

on't be afraid to try the old just about anything will catch catfish rule. Hot dogs in WD-40 sauce, Ivory soap, Night crawlers, Crawfish, Dough balls all have their place and time.
6: Check out others Peoples Ice boxes for leftover goodies likes open for a year and still half full caviar, cheese that cost LOTs AND NOBODY LIKED THAT CAME 3 YEARS AGO in a X-mas present, see rule 3 above for limits. See that friend from work for a beer and see if he has some catfish bait in the fridge.
7: Try the old cheese bait or dough ball route, Normally rule 2 or 4 will give you a small headstart but a box of Post toasties is $1.50 and then there is goverment cheese (Justwanano sounds like we think around the same the best cheese bait we ever made was in college with a big block of goverment cheese left in a roomamtes dorm refridge.
8: Buy a Catalpa tree. Use what you can and barter for the rest of your bait needs.
9: Go to the old swampy area (Everybody has that old swampy place around) and walk around without shoes or pants. Pick off all those leeches for free.
10: Try the old cast net at a local stream or lake edge.