Cheap creative toys

Music shops:  Metal banjo picks (excellent and inexpensive "claws"), tambourine brushes, drumsticks, sound effect toys
Beauty supply: Rubber bands, clips and clamps, hairbrushes
Theatrical/magic suppliers:  Ultraviolet lights and strobe lights, mind fuck props, costuming, fake blood, stage knives, rope tricks, itching powder
Kitchen/home: Bathroom accessories (loofah sponges, mitts), spatulas, board paddles, cheese graters, pickle pinchers, wooden spoons, rice paddles, plastic window blind closing rods (good canes)
Pet shops:  Collars, leashes, bells, dog food bowls, cages, remote electrical shock collars.  Veterinary supply sells horse and dog bite gags, forceps, sterile needles, some restraints
Angling shops: (Warning: fishhooks are not safe for piercing play!) Fibreglass rods, weights, pliers and clamps, fish descaler (abrasion toy), bells with clips
Farm supply: Castrating bands (Elastrator), cattle prods, flexible plastic fencing material, mild electrical "pest" fences
Saddlers:  Riding crops, harnesses and bridles, horse hobbles
Arts/Crafts shops:  Bamboo canes, fibreglass rods.  Craft stores sell leather and specialty rope. 
Ships chandler: Rope, winches, quick-release snaps, pulleys
Outdoor shops: Heavy duty ropes, carabineers, suspension harnesses
Cobbler:  Scrap leather, heavy rubber soles, laces, polish
Motorist shops: "Parts retriever" gripping toy, funnels, windshield wiper blades, vinyl cleaner
Haberdashery: Clover clamps, spiked measuring and cutting wheels
Chemists: Menthol rubs, Ace bandages, douches and enemas, aspirin (increases bruising), snakebite kits, Betadine, First Aid and safety gear, cotton swabs, disinfectants Baby Wipes (contains nonoxynol)
Discount & £ shops: Cheap clothespins, Tupperware type boxes to organise your toys
Toy shops: Table tennis bats, jumping rope, age play accessories
Charity shops: Cheap leather and fur coats to recycle, leather belts, "tearaway" or disposable clothing to rip off your body
Supermarkets:  Food play items like cucumbers and other insertion toys, whipped cream, Tabasco and hot sauces (not insertion toys)
Sports shops: Muscle rub, paddles, fibreglass fishing rods, chin-up bars can be installed for bondage, camping "potty chairs" for water sports play
Hardware/lumber: Rope, tarps, paint mixers (great little paddles), bungee cord, snap hooks and connectors, clamps, sandpaper, dowel rods for canes or spreader bars, eye bolts, chains, alligator clips, plastic rods, small inner tubes (slice lengthwise for flogger), paint rollers (convert to spikes)
Medical/lab supply:  Catheters, enema gear, forceps, latex, needles, scalpels, disinfectants, ambulance shears (emergency bondage cutter), urethral sounds, speculums, restraints, backboards, c-spine collars and rigid braces
Army surplus: Batons, leg irons, handcuffs, thumbcuffs, spare handcuff keys, saps, uniforms and boots