Go search the guy on a skate board form the Lego site. Â You might be able to by just that guy :) Â or just the skateboard. Â You might have to call their 1800 number for assistance. Â
Â
ibrickshop.com has just parts so you maybe able to just get the skate board. Â Also there is a skateboard with a guy in the community worker set from lego.com. Â
Â
As for base plates do your kids use them? Â I really don't know how many we have, or have had over the years. Â My son is 16. Â If we didn't have a base plate he always found a way around it.
Â
 I do know my son liked stuff with wheels, planes, spaceships, et. http://shop.lego.com/product/?p=9241&LangId=2057&ShipTo=US
Â
Â
http://shop.lego.com/ByTheme/Product.aspx?p=8195&cn=33Â Â I am hoping it works but this is suppose to be a link to a turbo tow truck. They have other $6 sets that are themed vehicles. Â You can sometimes find these types of boxes at TRU. Â We did them as stocking stuffers or "rewards/bribery" if we needed specific behavior. Â When my dd was going through medical care we found a small surprise box would entertain him while we did what we had to with our daughter.
Â
You don't have to by it all now. If you have the starter sets add as you go. Â Get the catalog and see where your child's interest lays. Â He might "want it all" but you might find that a specific set will make him happiest - or themes. Â Or you might find he wants specific pieces for their creations. Â
Â
Clean up tip...when my son was younger we put down a sheet/table cloth and he could only play on that. Â We could fold the cloth up to help poor into his bucket. Â For a while we also had a small dustpan and broom to help sweep them up.
Â
We never went this far though  http://www.ohhaveyouseenthis.com/2009/07/lego-clean-up-robot.html  --Ok I think that is awesome. Â